Two men — an uncle and a nephew — were fatally wounded Sunday morning in Abington Township, Montgomery County, in what police said was a “murder-suicide.”

Responding to a 911 call of a shooting around 11 a.m., Abington Township Police discovered William “Billy” Mauer, 54, dead from a gunshot wound inside a home on the 3000 block of Spruce Avenue.

The two had been quarreling, police said.

The nephew, Brandon Maurer, 28, was also found in the house, suffering from a self-inflicted gunshot wound, police said. He was taken to Jefferson Abington Hospital and pronounced dead at 11:39 a.m.

At the time of the double shooting, police said, other unidentified family members were inside the home and were not injured. The nephew’s gun was recovered by police.

With neighbors looking on, the block remained sealed off by police SUVs and caution tape Sunday afternoon while Montgomery County detectives and police continued to investigate.