A Singaporean woman and her two teenage children were detained at the Johor Baru checkpoint last Friday after allegedly hurling abuse at an immigration officer.
The 42-year-old woman had been told to wind down the rear tinted window of her car for inspection at the car zone heading towards Singapore at 3.30pm.
She allegedly refused to comply and, when told to step out of the car, was said to have made a rude hand gesture at the immigration officer and shouted vulgarities while sounding the car horn repeatedly.
According to Malaysian newspaper The Star, the woman's children, who were with her, are studying in a private college in Johor Baru.
Johor Immigration Department director Rohaizi Bahari confirmed the arrests, adding that the family was remanded for 14 days to assist in investigations.
The incident took place at the Bangunan Sultan Iskandar Customs, Immigration and Quarantine Complex.
The woman allegedly said the officer had asked for a bribe that she refused to give, and that an investigation officer allegedly asked her for money, said Chinese newspaper Shin Min Daily News.
The incident was posted in a Facebook page called JB Traffic, Road Blocks And Potholes Report, with news of the family's arrest and their personal details.
Photos of the family when they were arrested and handcuffed were circulated online.
Facebook posts also included a photo of the three in a holding room at the checkpoint. The son had his palm over his face, looking dejected, while his sister ate a meal of packed food.
A spokesman for the Ministry of Foreign Affairs said: "Officials from the Singapore Consulate-General in Johor Baru have visited the detained Singaporeans."
She added that "the Consulate is also in touch with the Malaysian authorities, and will continue to provide consular assistance to the three Singaporeans".