Police say two children are in their custody after a 12-year-old boy was stabbed at Imagination Playground at Betsy Head in Brownsville.

Officers responded to Thomas S Boyland Street and Dumont Avenue just before 3 p.m. Thursday.

The boy was stabbed below the chest, according to the NYPD.

News 12 crews on scene saw a knife, blood-stained clothing, a backpack and a jacket, all closed off in the middle of the playground with police tape.

Mothers like Bonita say she's sadly not surprised.

“I’m not really surprised, unfortunately. I pray for my kids every time they leave out the front door," said Bonita.

EMS took the boy to Brookdale University Hospital. Police say he is expected to be OK. No arrests have been made.