Camden County authorities yesterday were using eyewitness accounts to try to piece together what happened Wednesday night when Cesar C. Bonifacio was pushed at a Westmont pub and fell, causing a fatal head injury.

Bonifacio, 65, a Cherry Hill resident employed as an auditor for the U.S. Defense Department, died at Cooper University Hospital on Saturday.

His death was ruled a homicide after an autopsy Sunday.

The man accused of pushing him, Joseph Nicosia, 27, of Haddonfield, was charged with aggravated assault and released on bail pending further investigation, authorities said yesterday.

Nicosia was waiting for a take-out order at P.J. Whelihan's Pub at 6:10 p.m. Wednesday when he pushed Bonifacio, investigators said.

Bonifacio toppled over, striking his head, and was taken to Cooper, where he was treated for three days before dying, authorities said.

The county prosecutor's homicide unit did not disclose yesterday why Nicosia shoved the victim. Further charges have not been ruled out.

Bonifacio was married, and had two sons and two grandchildren. He was an accountant and auditor who worked at the Lockheed Martin facility in Moorestown, county officials said.

A Mass of Christian Burial will be said at 9:30 a.m. Thursday at the Catholic Community of Christ Our Light, 402 N. Kings Highway, Cherry Hill. Interment will follow in Locustwood Memorial Park in the township.

Contact staff writer Edward Colimore at 856-779-3833 or ecolimore@phillynews.com.