Magistrate Noor Aisyah Ahmad allowed police to remand five men in their 20s and a 19-year-old woman for seven days from today.

Yesterday, Johor police chief Mohd Khalil Kader Mohd in a statement said a man and a woman had been arrested at 2.30am to assist in the investigation into the case.

It is understood that the four other men linked to the case were arrested early today.

In the 7.30pm incident on Sunday, the 44-year-old victim was stabbed by four men who were in a white BMW. They also ran him over twice.

The victim had stopped at the petrol station with a woman, said to be his Vietnamese wife, to inflate the tyres of his car when he was set upon by his assailants.

Following the murder, Deputy Prime Minister Ahmad Zahid Hamidi, who is also home minister, was quoted as saying that the victim was the leader of a secret society and the attack stemmed from an ongoing dispute between two gangs.