delivered the opinion of the court:
The State appeals from the trial court’s granting of defendant’s motion to quash arrest and suppress evidence. We affirm.
We first note that defendant has not filed a brief. We will, therefore, consider this appeal under the guidelines set out in First Capitol Mortgage Corp. v. Talandis Construction Corp. (1976), 63 Ill. 2d 128.
Defendant, Peter L. Lahr, was charged with the offense of speeding (Ill. Rev. Stat. 1989, ch. 95V2, par. 11 — 601(b)), based on a radar reading procured by Officer Beyer of the Sleepy Hollow police department. Before trial, defendant filed several motions to strike the complaint and dismiss the charge against him, including a motion which based its prayer for relief on the fact that the offense and the radar surveillance *420took place in unincorporated Kane County, seven-tenths of a mile outside the boundaries of the Village of Sleepy Hollow. The trial court construed the motion as one to quash arrest and suppress evidence and granted it. In granting the motion, the court found that, because the radar surveillance took place outside the village boundaries, the arresting officer lacked official authority to arrest defendant. The State does not contest this aspect of the court’s ruling. However, the court further found that, by reason of the use of radar surveillance equipment, the officer was acting within his official capacity and not as a private citizen; therefore, the arrest was not legitimized by section 107 — 3 of the Code of Criminal Procedure of 1963 (Ill. Rev. Stat. 1989, ch. 38, par. 107 — 3 (arrest by private person)). It is this aspect of the trial court’s order which the State now appeals.
A reviewing court will not disturb a trial court’s decision on a motion to quash arrest and suppress evidence unless that decision is clearly erroneous. (People v. Foskey (1990), 136 Ill. 2d 66, 76.) We conclude that the trial court’s findings of fact were not against the manifest weight of the evidence, nor was its decision manifestly erroneous.
Section 107 — 3 of the Code of Criminal Procedure states:
“Any person may arrest another when he has reasonable grounds to believe that an .offense other than an ordinance violation is being committed.” (Ill. Rev. Stat. 1989, ch. 38, par. 107— 3.)
An extensive line of cases in Illinois has upheld the validity of extraterritorial arrests made by police officers who, lacking official authority, were found to have been authorized to make “citizen’s arrests.” (See, e.g., People v. O’Connor (1988), 167 Ill. App. 3d 42; People v. Gupton (1985), 139 Ill. App. 3d 530; People v. Rowe (1984), 128 Ill. App. 3d 721; People v. Marino (1980), 80 Ill. App. 3d 657.) Such arrests have been upheld even when the officers asserted official authority which they did not in fact possess. (See Marino, 80 Ill. App. 3d at 665; Gupton, 139 Ill. App. 3d at 533.) While the general rules promulgated in these cases are applicable to the case before us, the cases are factually distinguishable and provide only general guidance to us. We consider here whether the method used by the officer to gather information projected the arrest beyond the bounds of a citizen’s arrest and into the arena of official action which was not warranted or permitted in this case.
The closest case factually to the case before us is O’Connor (167 Ill. App. 3d 42). In O’Connor, the police officer conducted a stationary radar surveillance from a position just outside the boundary of his jurisdiction. However, in O’Connor, the road under surveillance was within the officer’s jurisdiction; in the case before us, both the officer’s position *421 and the area under surveillance were outside the officer’s jurisdiction. The O’Connor court held:
“[T]he extraterritorial assertion of authority may be viewed as tainting the use of information gathered. However, the surveillance done here was of a roadway within Officer Taylor’s jurisdiction. The use of radar equipment under such circumstances *** does not, in our opinion, constitute an impermissible assertion of extraterritorial power which could preclude the use of the information gathered.” O’Connor, 167 Ill. App. 3d at 47.
Here, we conclude that the position of the officer outside of his jurisdiction and the use of the radar on a stretch of road outside the jurisdiction combine to constitute an impermissible assertion of extraterritorial power. By using the radar gun to clock defendant’s speed while on duty and in a patrol car, Officer Beyer was acting in his official capacity as a police officer of the Village of Sleepy Hollow. The use of such equipment, in our view, taints the gathering of the information and its later use (see O’Connor, 167 Ill. App. 3d at 47) because the officer used the power of his office to gain access to evidence not available to private citizens. The trial court’s findings, that the use of the radar was an official act by Officer Beyer and that Beyer had no authority to commit that act outside his jurisdiction, were not against the manifest weight of the evidence.
We are unpersuaded by the State’s attempt to read the O’Connor case as supportive of the State’s position. The State argues that Officer Beyer was monitoring a road that passed through his jurisdiction and that, because the area of surveillance was such a short distance from the boundary of that jurisdiction, it is apparent that defendant was also speeding within the jurisdiction. At a minimum, the record contains no information as to where defendant entered the road upon which he was caught speeding; we cannot assume that he even drove through the Village of Sleepy Hollow. Moreover, we cannot assume that, if defendant did drive through Sleepy Hollow, he drove at an illegal speed, or at what speed he drove. Finally, it requires a leap of logic to attempt to equate, as the State does, the surveillance of a road inside the jurisdiction and that of a road that happens to pass through the jurisdiction. Such purported logic would also allow an officer to arrest a motorist speeding the opposite direction down the road into town where, the State would argue, the motorist might continue to speed. Pursued to its logical extreme, the State’s logic would allow a municipality to carry out radar surveillance almost anywhere in the State. While we encourage the prevention of crime in Sleepy Hollow, we cannot condone the projection of Sleepy Hollow’s authority beyond its borders. The fact that the road be*422ing monitored passed through the officer’s jurisdiction has no bearing on whether the officer had authority to monitor the road outside his jurisdiction.
We are similarly unpersuaded by the State’s reliance on Gupton (139 Ill. App. 3d 530) and Rowe (128 Ill. App. 3d 721). Both Gupton and Rowe involved extraterritorial arrests for driving under the influence (Ill. Rev. Stat. 1989, ch. 951/2, par. 11 — 501.1) and other traffic violations. The officers in both cases were found to have made the arrests as private citizens despite the fact that blood and urine samples (Gupton) and a breathalyzer test (Rowe) were required of the defendants. The State now argues that the taking of the tests in Gupton and Rowe was more within the province of official police action than is use of a radar device; therefore, if those tests did not transform the arrests in Gupton and Rowe into official acts, neither should the use of radar. This argument ignores the rationale set forth in Gupton and Rowe, a rationale which we find inapplicable to the case before us. In both Gupton and Rowe, the tests were given after the arrests were made; the defendants were arrested based on conduct and other factors (such as the odor of alcohol and slurred speech) that were observed by the police. Once the legitimate arrests were made, the officers could act as law enforcement officers and request the defendants to submit to the tests pursuant to section 11 — 501.1 of the Illinois Vehicle Code (Ill. Rev. Stat. 1989, ch. 95V2, par. 11 — 501.1). Gupton, 139 Ill. App. 3d at 534.
In the case before us, Officer Beyer was acting in his official capacity before he made the arrest. Whereas Officer Beyer used the radar gun to gather evidence before making the arrest, the officers in Gupton and Rowe used the powers of their offices after legitimate arrests had been made. This distinction makes Gupton and Rowe inapplicable to this case.
We conclude that the trial court’s finding that Officer Beyer acted in his official capacity in arresting defendant was not against the manifest weight of the evidence and that the order granting defendant’s motion to quash arrest and suppress evidence was not manifestly erroneous. Therefore, the judgment of the circuit court of Kane County is affirmed.
Affirmed.
GEIGER, J., concurs.