A 44-year-old pastor of a Philadelphia church allegedly shot and killed his 21-year-old son during an argument at the father's Darby Borough home around 1.30 p.m. on Christmas, according to Darby Borough Police Chief Robert Smythe.

Speaking to NBC10 News on Friday, Smythe said the Rev. Kirk Caldwell became involved in a domestic dispute between his son, Jordan, and a female at his house on Ridge Avenue. Delaware County officials were still debating last night what charges to file.

Kirk Caldwell is a pastor at End Times Harvest Mission for Christ in North Philadelphia, NBC10 said.

In July, after a 17-year-old was killed in the borough, Kirk Caldwell attended a vigil and said, according to the Delaware County Daily Times, "Retaliation is never the answer. Retaliation is only going to make it worse."    - Matt Katz