This is the life or death moment when a hero cop saves a tiny newborn baby from choking on its mother’s milk.

The 11-day-old tot’s horrified mum had run out into the street in Samambaia, Brazil, on Tuesday, 9th August, with the suffocating infant in her arms.

As the baby turned purple, she begged for help.

Miraculously, a squad of Military Police officers on patrol saw the woman’s desperation and immediately stepped in.

Nail-biting footage of the rescue shows how one cop holds the newborn flat on its belly with one hand and firmly taps its upper back with the other.

At one point, the baby can be seen throwing up some of the breastmilk it had been choking on.

The drama reportedly lasted five agonising minutes, but the tot eventually began to regain consciousness.

A team of military firefighters was called to the scene to check the baby’s health.