PHILADELPHIA (CBS) —  Police say one person is dead and three others are injured following a shooting inside a Summerdale tavern Sunday night.

Authorities responded to the 900 block of Pratt Street for the report of a person with a gun/shots fired.

Police say upon arrival, they found the first victim suffering from multiple gunshot wounds. He was taken to the hospital and pronounced dead at 6:44 p.m.

Police have identified the victim as LaBrian Dale-Parker, 34, from Fredericksburg, VA.

Authorities say a second victim was taken to Aria-Frankford Hospital by a private vehicle and listed in critical condition. The victim was later transferred to Aria-Torresdale Hospital.

Police say a third victim suffered a gunshot wound to his right thigh. He was taken to Lankenau Hospital by private vehicle and listed in stable condition.

Officials found a a fourth victim suffering from multiple gunshot wounds. The victim was taken to Aria-Frankford Hospital by private vehicle and listed in critical condition. The victim was later transferred to Jefferson Hospital.

Police say the motive for the shooting was an argument.

The incident remains under investigation.