Pennsylvania standoff ends; off-duty N.J. officer involved, police say June 18, 2012 -- Updated 1508 GMT (2308 HKT) The standoff began Sunday afternoon One officer is injured and several police vehicles are shot Police identify the gunman as an off-duty Clifton, New Jersey, officer (CNN) -- A standoff between police in Doylestown Township, Pennsylvania, and a man said to be an off-duty New Jersey police officer has ended, authorities said Monday. The incident began about 1:45 p.m. Sunday when Doylestown Township police received a call about a argument. As they arrived about 15 minutes later, a man inside a residence began shooting at approaching officers. One officer was injured, and several police vehicles were pelted with bullets, Pennridge Regional Police Department Chief David Mettin told reporters Sunday. Police identified the shooter as Richard Klementovich, 42, a Clifton, New Jersey, police officer. They said he barricaded himself inside the residence Sunday night, with law enforcement authorities stationed nearby. Police did not give details on how the standoff ended. Authorities scheduled a news conference for later Monday to provide more information. Sgt. Robert Bracken with police in Clifton, about 15 miles northwest of New York City, confirmed Sunday one of its officers was involved in the incident. Clifton police were on the scene in Doylestown, about 75 miles away, and were working with authorities Sunday, he said. Doylestown Township, about 30 miles north of Philadelphia, has a population of about 17,500. CNN's Rick Martin and Maggie Schneider contributed to this report.