Hafizulla allegedly killed 24-year-old Sayed Azmarai, who used to earn money by resolving issues related to VISA and passports of Afghans, in south Delhi's Malviya Nagar area, police said.
Hafizulla had feld the national capital immediately after the incident. Earlier, the victim had deposited Rs 40,000 with Hafizulla for renewing his passport.
"At one point, the accused refused to return the passport. Instead, Hafizulla, along with one of his associates, eliminated Azmarai. The associate was arrested but Hafizulla managed to escape," a senior police official said.
"At a railway station in Maharashtra, he escaped from police custody by jumping out of moving train on Saturday. He took advantage of getting permission to go to the urinal," police said.
Delhi Police Commissioner Alok Verma has demanded a report on the matter. Police said that its team, which was bringing Hafizullah back, will be acted against once it returns to the national capital.