The father of a 1-month old boy who was found unresponsive in his Bronx home was charged with his son’s murder, cops said.

Teshawn Watkins, 27, allegedly killed the baby boy, who was found dead in his bassinet when his father called police early Wednesday morning, authorities said.

Watkins had smothered the child with a pillow, WABC-TV reported.

Medics rushed the boy to Montefiore Medical Center, where he was pronounced dead.

Watkins was arrested on charges of murder, manslaughter, reckless endangerment on Thursday night.

According to sources, the family has a history with the city’s Administration for Children’s Services.

Two sons, now ages 3 and 4, were temporarily taken away from the family by ACS when they were just a few months old, but the agency gave the boys back to the family, sources have told The Post.

“There appears to be some evidence that the father has been physical with the children,” a source told The Post before the charges were filed.

ACS would not confirm whether or not it had previous dealings with the family.

“Our top priority is protecting the safety and wellbeing of all children in New York City,” ACS spokeswoman Chanel Caraway said.