Second man arrested over London train attack - police

LONDON - 17 September 2017: A second man has been arrested by police investigating Friday's bomb attack on a London underground train, police said.

The 21-year-old man was arrested in the west London suburb of Hounslow just before midnight on Saturday, the Metropolitan Police force said in a statement.

He was detained under Britain's Terrorism Act and taken to a south London police station, the force added on Sunday.