Don’s warning came after the deadly bomb attack at the concert of US pop singer Ariana Grande in Manchester, the United Kingdom on Monday.

He said everybody should be more careful when travelling to public places.

He said the ministry ordered the Thai Embassy in the UK to check whether there were any Thais affected by the Manchester attack.

So far 22 people, including children, were killed and dozens others were injured when a man detonated a bomb at Grande’s concert, in what is Britain’s deadliest terror attack in 12 years.