LONDON -- The 21-year-old man arrested on Saturday by police investigating the terrorist attack at Parsons Green subway station in west London has been named as Yahyah Farroukh, local television report said early Monday.

Farroukh is listed as living at an address in Stanwell, Surrey, some 26 kilometers from central London, which was searched by police officers on Sunday, according to the report.

His first pictures were published by the British media since he was arrested at a Fried chicken shop in Hounslow on Saturday night.

Farroukh is believed to be from the Syrian capital of Damascus originally and has lived in Britain for at least four years.

He previously stayed at the Sunbury house of Ronald Jones, 88, and his wife, Penelope, 71, who have been fostering at least 268 children over the past four decades, including refugees from Eritrea, Iraq, Somalia and Syria, according to reports.

Farroukh's arrest came after a 18-year-old chief suspect was detained at Dover ferry port on Saturday morning after an explosion on a packed rush-hour carriage at Parsons Green subway station on Friday morning injured some 30 people.

Both men remain in custody under section 41 of the Terrorism Act 2000, which allows police to detain suspects without charge beyond the four days allowed for suspects connected to other crimes.

British Home Secretary Amber Rudd claimed the two arrests as "good progress" in the inquiry of the London tube blast.

The terrorist attack was caused by an improvised explosive device, which had a timer, but failed to fully detonate.

Rudd said that it appeared the bomber was not a lone wolf but added that it was "too early to reach any final conclusion on that."

She said that military personnel who were mobilized when the threat level was raised on Friday night will return to normal duties.

She urged the public to "continue to be vigilant but not be alarmed."

The Islamic State claimed responsibility for the fifth terrorist attack in the country over the past six months.

Previous attacks in London this year at Westminster Bridge, London Bridge and Finsbury Park as well as a blast at an Ariana Grande concert in Manchester killed dozens of people and injured more than 150.