13-year-old Mahin was on his way to a friend’s house when a speeding garbage truck hit him
Md Sohel escaped from the Dhaka Medical College Hospital (DMCH) on Nov 29, two days after the prison authorities took him there for treatment.
He has been arrested from Dhaka's Keraniganj early on Sunday, said Senior Superintendent Jahangir Kabir of Dhaka Central Jail.
The 42-year-old was serving a two-year term in a narcotics case.
Jail authorities suspended two prison guards over the incident.