The court ordered Teo Mui Huat, 45, to undergo a psychiatric examination at the Institute of Mental Health.

According to court documents, Teo had called from a flat in Farrer Park Road last Thursday with this message: 'Someone is going to plant a bomb; please pay attention.'

He will appear in court again on Oct 16.

If convicted, he could be fined up to $50,000 and jailed up to seven years