Thomas Conley is being held in the Ada County Jail on felony counts of burglary and grand theft after Garden City police say he broke into at least 17 cars over the past three months.

Investigators are trying to figure out if the 20-year-old Conley is involved in any other similar car burglaries in Boise but they do have evidence he was involved in more than a dozen in the Riverside Village Subdivision off Glenwood Drive, Sgt. Tom Patterson said.

Police arrested Conley after interviewing him Wednesday. Officers did not catch him in the act of a break-in. Police began their investigation into Conley after getting a tip earlier this fall and gathered enough evidence to bring him in Wednesday, Patterson said.

Police say Conley didn’t force entry to get into cars. He targeted unlocked cars and trucks and stole items like iPods, cell phones, purses, wallets, and other items, Patterson said.

Conley is charged with grand theft, which means police have evidence he took something which had a value in excess of $1,000, but police reports do not say what that was.

Conley will make his initial court appearance Thursday afternoon. Conley is also charged with a misdemeanor count of possession of drug paraphernalia.

The crimes of grand theft and burglary are punishable by up to 14 and 10 years in prison.