Beating caused August death

A 45-year-old man was found dead four months ago outside the Brooklyn NYCHA building where he lived — and now authorities have determined he was bludgeoned to death.

Darrel Tripp, 45, was discovered dead in a pool of blood on the sidewalk outside the Ralph Ave. Rehab development on Ralph Ave. near Sutter Ave. in

Brownsville on Aug. 1.

The city medical examiner determined this week he died from blows to the head with a blunt object and classified his death a homicide. Tripp had five previous arrests, but none since 2006. Records show he served two prison terms for weapons convictions.