In a fresh development in the Mulund bomb blast case, police have arrested an alleged SIMI [Students Islamic Movement of India] activist from Ratnagiri district of coastal Maharashtra for his alleged involvement and have booked him under Prevention of Terrorism Act.

Ghulam Abdul Khotal was produced on Monday before Designated Judge A P Bhangale, who remanded him to police custody till May 2.

Khotal was arrested from Khapoli village in Ratnagiri district. During investigations, police came across information about Khotal's alleged involvement in the conspiracy.

Eleven persons were killed in a powerful blast in a local train at Mulund railway station on March 13.

In another development, Taufiq Ahmed, an accused in the Ghatkopar bomb blast and suspected member of Muslim Defence Force, was on Tuesday remanded to police custody till April 30 by the same court.

The authorities had slapped POTA provisions on Taufiq alias Chhotu who was brought on April five from Chennai by a team of Mumbai police.

Taufiq, a close associate of prime absconding accused Abu Hamza, had participated in the conspiracy to carry a powerful blast in a bus at suburban Ghatkopar on December 2 in which two persons were killed and 30 injured.

Five others have already been arrested in Ghatkopar bomb blast case while one mysteriously disappeared from police custody when he was being taken in a police jeep to Aurangabad for investigations.