A 24-year-old driver stopped and searched by cops was found with a “lethal” lock knife “precariously clenched in between his buttocks”.

Police pulled over Kareem Worthington of Providence Court, Islington, after he was spotted driving his silver Mercedes “erratically” in New North Road yesterday afternoon.

Worthington appeared “nervous and agitated”, and when cops saw some white powder which they believed could be a controlled substance, they took him to Stoke Newington Police Station.

During a strip search officers noticed “something coming out of his backside”.

“It was the knife,” said Det Insp Paul Ridley.

“I’ve come across knives concealed and stored everywhere, but never before behind someone’s backside, it’s ridiculous.”

Worthington told police he keeps the knife in his car all the time, and when cops pulled him over he decided to hide it.

He appeared before Thames Magistrates Court today and pleaded guilty to possession of an offensive weapon.

He was immediately sentenced to six months’ imprisonment.

Worthington was convicted for possession of a bladed article in 2011 and 2012, and was imprisoned for affray in 2014.

Two other men were found with knives during stop and searches by police in Hackney yesterday.

“That’s the scale of what we are dealing with,” said Det Insp Ridley.

“That’s why it’s so crucial we continue stopping and searching people. There are lots of people out there who are carrying knives.”

• Worthington initially told police he was an Uber driver and this detail was included in the original version of this story. Officers only realised he was lying and had in fact given someone else’s details after he was jailed.