A case of attempt to murder has been registered against a 15-year-old boy for allegedly attacking a man with a baseball bat and critically injuring him in Byculla area of central Mumbai, police said on Monday.

The victim, Nadeem Batliwala (19) sustained grievous head injury in the attack that took place in Saifee Park, a residential building, on the night of September 15, an official from Byculla police station said.