Three Malaysian students were questioned by Greater Manchester Police on Monday (May 29), a week after a suicide bombing at a concert by American popstar Ariana Grande killed 22 people.
Malaysia's Foreign Ministry said in a statement on Tuesday (May 30) night that the trio were detained by police at 5.40pm on Monday for questioning.
"All three students were later released at 9pm. The Ministry wishes to advise the public to remain vigilant and follow the instructions by the local authorities," it said in a statement.
The statement did not say why the students were questioned, or gave any other details.
British police had said on Monday that 16 people have been arrested in connection with the attack, and 14 remain in custody. It warned of a "network" which likely supported the bomber, of which members are believed to be still at large.
Six Malaysian students managed to leave the concert held at the Manchester Arena on May 22 safely, according to the Malaysian High Commission in Britain.
There are reportedly 1,303 Malaysian students in Manchester.
The Islamic State in Iraq and Syria (ISIS) has claimed responsibility for the attack.