NEW DELHI: The Supreme Court has upheld the conviction of actor Sanjay Dutt and has sentenced him to five years imprisonment. The actor has four weeks to surrender. The court said that the circumstances and nature of the offence was so serious that Dutt cannot be released on probation.

The apex court upheld the conviction of Sanjay Dutt under Arms Act in 1993 blasts case, but reduced the six year jail term given by TADA court to five years.

The apex court said it agreed with TADA court's decision to acquit him of terror charges but offences under Arms Act were clearly made out for possessing and later destroying weapons of prohibited calibre.

Sanjay Dutt, who has already served nearly 18 months in jail, will now have to go to jail and serve the remaining term.

Dutt will not be able to shoot pictures during the remaining three and a half years of prison term, the apex court said.

The judgement was delivered by a bench of Justice PS Sathasivam and BS Chauhan. The judges only read out the excerpts of the voluminous judgement that lasted for one and a half hours.

Sanjay Dutt was sentenced to a jail term of six years for illegal possession of firearms acquired from terrorist acquaintances, who were responsible for the 1993 Mumbai bomb blasts on July 31, 2007.

He was granted bail by the apex court on November 27, 2007.

A total of 257 persons were killed and 713 others injured when a series 13 coordinated explosions shattered the metropolis on March 12, 1993.

The blasts occurred at 12 places including Bombay Stock Exchange building, Air-India Building at Nariman Point, at Worli opposite Century Bazaar, Hotels Sea Rock and Juhu Centaur.