Newark police investigating how 3-year-old boy injured himself with self-inflicted gunshot [Video]

NEWARK, New Jersey (WABC) — Police are trying to figure out how a young child got hold of a gun and accidentally pulled the trigger on himself Thursday night.

The 3-year-old boy is in critical condition after he somehow turned a loaded gun on himself, an accident that sent his older brother running for help.

It was about 5:47 p.m. on Thursday when the toddler pulled the trigger inside a blue home on Wainwright Street.

Seven minutes later, surveillance video from a corner store shows his older brother leaving the house, heading to the store for help.

The manager says he came into the store around 5:54 p.m. with his shirt covered in blood. He says the brother told him that he needed help, and that his younger brother could not breathe.

Seconds later, the camera picked up the brother and one of the store clerks heading back to the house. The store clerk immediately …