WASHINGTON, Jan. 29 (Xinhua) -- Four people were killed in a shooting in Berks County, east Pennsylvania, on Sunday, local media reported Monday.

Police responded to the scene on South 3rd Street of the city of Reading at around 7:00 p.m. Sunday.

All victims were males, a local newspaper said. Three of them, found inside a row home, were pronounced dead at the scene and the fourth died at a hospital.

Their identities have not been released.

Investigators have not released any information on possible suspects or motive.

Authorities said that the investigation would continue on Monday.