PHILADELPHIA (CBS) - Philadelphia police made an arrest in a fatal shooting in the Port Richmond section of the city Saturday afternoon.

The shooting happened inside a second floor apartment in the 2100 block of East Somerset Street at about 2 p.m. Police say a 36-year-old woman was shot once in the head by a 37-year-old male. The unidentified victim was pronounced dead at 2:55 p.m.

Police say the suspect, whose identity they have not yet released, is in custody. The motive in this shooting is not known at this time.