Pittsfield Township police say they've arrested two teenagers believed to be responsible for setting off an explosive device in a gas station Tuesday evening.

The suspects are 17-year-old Pittsfield Township resident and 18-year-old Ann Arbor resident, a police news release said.

Gordy Schick, the township's deputy director of police services, said investigators received tips, reviewed surveillance videos from the store and went to local high schools to identify the teens. At least one attends an Ann Arbor high school, Schick said.

The teens are suspected of entering a Sunoco in the 4000 block of Washtenaw Avenue just after 7 p.m. Tuesday and setting a pop bottle device near the counter.

After they left, police say the bottle exploded, causing the clerk to suffer minor eye and throat irritation from the fumes. The clerk went to an area hospital to be evaluated.

The explosion spread fumes throughout the business, and firefighters ventilated the station before it could reopen. It's unclear how much damage it caused.

The teens were arrested early this afternoon, Schick said. He said the motive for the incident remains under investigation.

The case will be turned over to prosecutors for review for possible criminal charges Thursday.