CONCORD TOWNSHIP, Pa. (CBS) — Authorities say a man claimed the device he left a behind at a bank he robbed with a handgun in Delaware County was a bomb.

New Jersey Inmate Sentenced For Fatally Beating, Choking Cellmate

READ MORE: Philadelphia-Area Clinics Temporarily Close, Pivot After FDA, CDC Recommend Pausing Use Of Johnson & Johnson's COVID-19 Vaccine

The incident happened around 12:15 p.m. Tuesday, when the suspect walked into the Malvern Federal Savings Bank in the 900 block of Baltimore Pike in Concord Township.

READ MORE: Lateshia Hill's Family Vows Justice Will Be Served After Deadly Triple Shooting In Wilmington

Police evacuated the bank as bomb squad officials investigated the matter.

The suspect is described as a black male in his mid-20s with a thin build, wearing black clothing.

MORE NEWS: Duante Wright Shooting: Dozens March In Philadelphia In Protest Of Fatal Police Shooting

Police say he fled the scene in a two-door silver Pontiac.