A Vietnamese restaurant in Kuala Lumpur is facing a fine. Photo: AFP/Mohd Rasfan

Malaysian police arrested three Indonesian passengers in a taxi on Sunday on suspicion they were about to rob a 30-year-old female who was a part-time Grab driver.

The Grab driver, who also worked as a kindergarten teacher, took to Twitter and tweeted she was initially taking two Indonesian men and an Indonesian woman from Brem Mall, a shopping complex in Kepong, to a remote location near Old Klang Road in Kuala Lumpur, China Press reported.

At Jalan Tuanku Abdul Halim her car was stopped at a police checkpoint. After confirming she was a Grab driver, officers checked the three passengers and found a short knife. The driver was told the passengers she was carrying were suspects in robberies targeting e-hailing drivers and robbed them at remote drop-off locations.

The three Indonesian, who carried no identification documents or money, were arrested and charged with attempted robbery. The Grab driver went to the police station to file a case.

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