London blast: ISIS claims responsiblity, teen arrested

The Islamic State group on its Amaq news agency claimed it was behind the underground train explosion, which took place at 8.20 a.m. on Friday and sent a ball of fire along a carriage of the eastbound District Line train from Wimbledon at the Parsons Green station, southwest London.

Later on Sunday, police arrested an 18-year-old youth in connection with a terror attack that left 29 people injured and resulted in an increase in the country’s terror threat level from “severe” to “critical”.

The youth was detained in the port area of Dover by Kent Police over the Friday morning rush hour attack at the Parsons Green station in southwest London, BBC reported.

The man, whose identity and nationality have not been disclosed, was charged under section 41 of the Terrorism Act, with an act of terror, officials said.

Metropolitan Police Deputy Assistant Commissioner Neil Basu said the arrest was “significant”, but the terror threat level remains at “critical” and the investigation continues.

“This arrest will lead to more activity from our officers. For strong investigative reasons we will not give any more details on the man we arrested at this stage,” he said.