First Images of London Bomb Suspect Yahyah Farroukh Emerge

The first images of one of the suspects being held by U.K. police after the bomb blast on a London subway train on Friday have appeared in British media.

Yahyah Farroukh, a 21-year-old from Syria, is being questioned under Britain's Terrorism Act, meaning he is suspected of being involved in extremist-related activities.

He was recently registered as a resident at an address that police searched in the British country of Surrey, to the southwest of London, after the attack. Officers detained him at a fried chicken shop named Aladdin's on Saturday night, according to reports by Sky News.

On Friday, at around 8:20 a.m. local time, an improvised explosive device, or IED, detonated inside a bag bearing the name of German supermarket Lidl, injuring 29 at Parsons Green subway station in west London. The device, which had been fitted with a timer, did not detonate fully.

Farroukh's Facebook page says he is from the Syrian capital, Damascus, which has been wracked by fighting for more than six years in the protracted civil war.

In one post on his page, he shared an image of a candle being lit for Syria. It read: "So the UK government has authorised bombings in Syria, God protect all the innocent people that are going to be killed in the process #pray4Syria"

Another suspect, an 18-year-old man, was detained at Dover Ferry port on Saturday while attempting to get to France. Police believe he is the suspect pictured in CCTV images of a man holding a similar Lidl bag.

British media reported that he is an Iraqi orphan who moved to Britain when he was 15 years old, after his parents died in his home country.

Both men had spent time in the same care of foster parents, Penelope and Ronald Jones, who have fostered almost 300 children.

The Islamic State militant group (ISIS) claimed responsibiity for the bomb blast on its Amaq news agency, but authorities are yet to present any indication that the jihadist group played a role in the attack. It is rare for ISIS to claim an attack when the perpetrators are still at large.

It represented the fifth act of terror on British soil this year. Four others included three vehicle rammings in London—two on bridges and one outside a mosque, targeting Muslims—and a suicide bomb attack at an Ariana Grande concert in Manchester. The attacks have killed 37 people in total.

After Friday's plot and the ensuing stampede the blast caused at the station, all but one of those injured have now left the hospital.

British police increased the country's threat level to "critical" after the attack, but lowered it again to "severe" following the arrests of Farroukh and the 18-year-old man.