UK police on Saturday arrested a suspect accused of "terror offenses" who escaped from a London prison earlier this week, sparking a nationwide manhunt.

"Metropolitan Police officers have arrested Daniel Khalife. Officers apprehended him just before 11 am (1000 GMT) today in the Chiswick area, and he is currently in police custody," the force said in a post on X, formerly Twitter.

Prime Minister Rishi Sunak, currently in India at the G20 summit, told UK media he was "very pleased with the news".

"My thanks to the police officers for their fantastic work over the past couple of days," he added.

The 21-year-old former soldier fled from Wandsworth prison in south London on Wednesday morning, probably by clinging to the bottom of a delivery van.

His disappearance triggered a major hunt with extra security checks introduced at ports and airports amid fears he may try to flee the country.

But following confirmed sightings in southwest London, he was eventually apprehended in the Chiswick neighborhood on Saturday.

Hours before his arrest, police issued an appeal for members of the public to "remain vigilant", saying that Khalife was believed to be wearing a black baseball cap, black T-shirt and dark-colored bottoms while carrying a small bag or case.

Met Police Commander Dominic Murphy told reporters: "It's been about 75 hours since he went missing from the prison to the point of his arrest. That's pretty quick given the challenge of trying to find this individual.

"In terms of the investigation, it... really took a different course last night, when we did an intelligence-led search in the Richmond area.

"While we were at that search, we had a number of calls from the public over the next hour or two, giving us various sightings of him," he added.