The Special TADA Court on Friday remanded Karimullah Osan Habib Khan, a key accused in the 1993 Mumbai serial blasts, to CBI custody till August 29.

Khan, an accomplice of gangster Dawood Ibrahim who was on the run for the last 15 years, was arrested on Thursday by the Mumbai crime branch from the extended suburbs of Nallasopara.

Khan was allegedly involved in landing of RDX on the Raigad coast and its transport to Mumbai prior to the blasts which killed 273 people and injured over 700.

He has been absconding since then. He returned to India in 2006. According to police, he lived and worked in Dawood's house in Karachi for some time.