A mindless thug who robbed a stranger at knifepoint in Stoke Newington and then stabbed a police officer has been jailed for four years.

Police have now released CCTV of the horrific attacks, which happened at about 5.40pm on January 11.

Attacker Muhibur Rahman, 19, was chased by Sgt Carroll Weeden after she saw him mugging someone outside Tesco Express in Stoke Newington High Street – yards from a major police station.

He tried to escape on a bike and then stabbed Sgt Weeden in the arm when she caught up with him. The officer even chased Rahman after being stabbed and then, with the help of passers-by, was able to wrestle him to the ground and wait for back-up to arrive.

Rahman, of Heathland Road, Stoke Newington, was sentenced at Wood Green Crown Court on Wednesday last week. He was given a three-year sentence for the robbery, three months for possession of a knife (to run concurrently) and one year for assault with intent to resist arrest having pleaded guilty at an earlier hearing.

Sgt Weeden, from the Stoke Newington neighbourhood team, luckily suffered just bruising in the attack, because her clothing meant the knife did not make contact with her skin.

Speaking after Rahman was locked up, she said: “I am pleased the court was able to recognise the gravity, seriousness and effects of knife crime on the victim of the knife-point robbery and me as a police officer.

“Police face increasing danger on a daily basis, and without fear or favour, put themselves in the line of danger regularly, with the risk of facing the gravest of consequences in doing so.

“I believe I had a very lucky escape that night, and I am acutely aware that things could have been much more serious.

“I am immensely proud of the colleagues who came to my aid. I would like to thank members of the public who helped me that night and who showed tremendous courage, bravery and public spirit.”

The victim of the robbery - a 20-year-old man - was not injured, but had the blade of the knife held to his throat and was bundled to the ground by Rahman.

Det Insp Paul Ridley, who led the subsequent investigation by Hackney CID, said: “Sgt Weeden showed enormous courage in the most adverse circumstances.

“It was only through sheer fortune the knife blade did not make contact with the officer’s face or neck which could have proved fatal.

“CCTV footage and the radio transmission made by Sgt Weedon on the night demonstrate the immediate and unexpected adversity that police officers can encounter.

“The sentence imposed by the judge and the comments made reflect any individual carrying and using knives, especially against police officers, will be jailed for a considerable period.”