A father and son were allegedly shot dead by their downstairs neighbor in Brooklyn Sunday night.

The search is still on for the shooter.

The victim’s family called the suspect psychotic, saying he would constantly complain about noise when they weren’t making any. On Sunday, they say he confronted the family yet again, this time pulling out a gun.

“He killed my brother and my dad,” the victim’s daughter said.

His family in East Flatbush, Brooklyn is shattered after police said the disgruntled neighbor opened fire Sunday night, killing 47-year-old Bladimy Mathurin and his 27-year-old son, Chinwai Mode.