Dhaka Senior Cheif Judicial Magistrate Mishkat Shukrana passed the order when Sub-Inspector Shahidul Islam of Sadarghat River Police Station and also the investigation officer of the case produced him before the court with five-day remand prayer.
The court also rejected the bail petition of the accused.
Police arrested Salam from Lalkutir ghat in the city's Sutrapur area on Tuesday morning.
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Dhaka-bound ‘MV Morning Bird’ launch carrying around 150 passengers from Munshiganj sank after being hit by ‘Mayur-2’ near Shyambazar in the capital’s old town on June 29.
The bodies of 34 people were recovered.
Mohammad Shamsul, sub-inspector of Sadarghat River Police Station, filed a case at South Keraniganj Police Station the following day.
Mayur-2 launch owner Mofazzal Hamid Soad, Master Abul Bashar, Jakir Hossain, driver Shipon Hawladar and Master Shakil were among the accused.