In this file photo dated June 30, 2020, the Merlion statue is seen along the Marina Bay area in Singapore. (PHOTO / AP)

SINGAPORE - A 30-year-old Australian man and a 39-year-old man were charged with false bomb threats in two separate cases on Saturday, according to a statement by the Singapore Police Force.

During a Scoot flight to Perth, Australia, on Thursday, the 30-year-old passenger informed cabin crew members repeatedly that he had a bomb. As a result of the threat, the plane had to turn back to Singapore, the statement noted.

In another case on Friday, the police were alerted to a bomb threat onboard a cruise ship berthed at Marina Bay Cruise Center. However, no threat items were found on the ship after extensive security checks

The man may be liable to an imprisonment term of up to 10 years, a fine up to 500,000 Singapore dollars (about $365,000), or both, for making false threats of terrorist acts, according to the statement.

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In another case on Friday, the police were alerted to a bomb threat onboard a cruise ship berthed at Marina Bay Cruise Center. However, no threat items were found on the ship after extensive security checks.

After follow-up investigations, the police identified the suspect and arrested the 39-year-old man.

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The man may be liable to an imprisonment term of up to seven years, a fine up to 50,000 Singapore dollars (about $36,500), or both, for communicating false information about a harmful thing, according to the police.