A 41-year-old man was arrested on Tuesday for making a bomb threat call to the Immigration and Checkpoints Authority's (ICA's) operations room located at Woodlands Checkpoint, said the police in a statement on Wednesday evening.

The statement said that ICA had received a call early on Monday morning from someone who claimed that he was a Singaporean staying in Malaysia. The caller also said that he has to travel frequently into Singapore and expressed his frustration over the traffic congestion at the Causeway over the previous few days. Before he hung up, he threatened to send a bomb to the Woodlands Checkpoint, added the statement.

ICA then alerted the police and stepped up security measures as police investigators began tracing the anonymous caller.

The suspect, who is said to be a Malaysian and a Singapore permanent resident, was arrested at about 7.40pm at the Tuas Checkpoint. Investigations revealed that the threat was not substantiated and the call was a hoax.

If convicted, he is may face a fine not exceeding $100,000 or imprisonment for a term not exceeding five years, or both.