A female police officer has been hailed a hero after video emerged of her abandoning her position of cover during Tuesday's deadly Jersey City shooting to drag her wounded colleague out of the line of fire.

Sgt. Marjorie Jordan was one of dozens of cops who descended on JC Kosher Supermarket on Tuesday after Francine Graham, 50, and David Anderson, 47, a pair of anti-Semitic lovers, opened fire on it, killing three innocent people.

She stood in a position of cover and fought the killers for two hours, exchanging gunfire in a terrifying scene that witnesses described as a 'war zone' until they were eventually killed.

At one point in the siege, Jordan watched as a male colleague took a bullet to the arm.

Sgt. Marjorie Jordan saved her wounded colleague after he was shot in the shootout at the Jersey City kosher supermarket on Tuesday

As he writhed around on the ground, she ran to him then picked him up and helped him run away with her to a safer spot.

A photograph of the pair afterwards is now spreading on social media, with users hailing her bravery and the bravery of the unnamed officer who was shot.

Sgt. Jordan was among dozens of brave cops who responded to the tragedy

Police chiefs and mayors say that if the authorities had not responded so quickly to the shooting, Graham and Anderson would have gone on to kill more people.

Two as-yet unnamed cops were on a walking post a block from the supermarket when they heard the first gunshots.

They rushed to the store and returned fire, a move which cornered the shooters into the store.

The three innocent victims - Leah Mindel Ferencz, 32, the store owner's wife, customer Moshe Hirsch Deutsch, 24, and worker Miguel Douglas, 49, were killed before the cops got there.

Jordan is filmed running over to her colleague as he writhes around on the ground in pain having just been shot

She leaned over and helped him off the ground while bullets whizzed past them

Jordan then dragged her fellow officer away and ran back to her position of cover

The cops were doing battle with David Anderson (left) and Francine Graham (right) who both died

Graham and Anderson are filmed approaching the store with their guns drawn

This was the scene at the store on Wednesday as volunteers and police officers tried to put together what happened

Graham and Anderson had already shot dead Detective Joseph Seals after encountering him at a nearby cemetery.

He was investigating another murder which they are also believed to have committed, that of 34-year-old Uber driver Michael Umberger.

Umberger was found dead in the trunk of his Lincoln town car in Bayonne, New Jersey, late on December 7.

The motive for his murder is unknown and it remains unclear how Graham and Anderson came into contact with him.

Detective Seals was onto Graham and Anderson because they were driving a U-Haul that was somehow connected to his murder.

When he approached them in the cemetery, they shot him dead then fled.

Anderson and Graham had at one time dated. He was a member of the Black Hebrew Israelites who have strong religious views and who can adhere to Jewish and Christian beliefs.

He had posted anti-Semitic sentiments online and police found a religious note in the U-Haul along with a pipe bomb.

New Jersey police chiefs have been hesitant to label the incident an anti-Semitic attack, but Jersey City Mayor says it was just that.



Leah Mindel Ferencz, 32, the store owner's wife, customer Moshe Hirsch Deutsch, 24, were killed

Miguel Douglas, who worked in the store, was also killed as was Detective Joseph Seals