Several firefighting units have been dispatched to the factory in the Bayezid Textile area
Sub-Inspector (SI) Fazlur Rahman of Dhaka Medical College Hospital (DMCH) police outpost said that Md Alam, 20, a rickshaw-puller, was beaten to death by his father, Dulal Miah.
Dulal has been absconding since the incident.
Quoting Alam's wife 'Nadia', SI Rahman told bdnews24.com that Dulal started beating his son with an iron rod early morning, while the couple was sleeping.
Alam was injured in the head.
Doctors declared him dead after being rushed to the DMCH.
The victim's wife informed police the father and son had an argument a few days ago and since then Dulal suspected that his son could poison him to death.
She claimed that the incident was an outcome of that misplaced suspicion.