MUMBAI, India (AP) - Bollywood star Sanjay Dutt was sentenced Tuesday to six years in prison for illegally possessing guns that he received from key plotters behind the 1993 bombings in Mumbai.

The well-known actor already has served 18 months in jail following his arrest, and it appears he will have to serve another 4½ years behind bars.

Dutt was convicted last November on a charge of illegal possessing three automatic rifles and a pistol, but acquitted of more serious terrorism charges relating to the bombings.

There had been speculation that Dutt would get probation. But Judge Pramod Kode said that even though he wasn't sure Dutt possessed the guns with the intention of committing a terrorist act, merely having them ''shows scant respect to the law.''

''In no sense can this be said to be a minor offense,'' Kode said.

Dutt, who had been out on bail for the past 12 years while the trial dragged on, looked down and listened with his hands clasped behind his back as Kode read the sentence.

Within minutes, he was taken into custody. ''Don't be sentimental, be calm and quiet,'' the judge said, as Dutt stood weeping before being led away.

The sentencing of Dutt, along with three others Tuesday, ends the sprawling Mumbai bombings trial, which dragged on for 12 years and saw more than 100 people convicted, 686 witnesses and 13,000 pages of testimony. The series of bombings on March 12, 1993, killed 257 people.

A dozen people were sentenced to death, while 20 others face life sentences. More than 50 others will serve between three and 14 years in jail.

Dutt was able to complete pending movie projects during bail extensions over the past year and only recently finished filming comedies like ''Dhamaal'' or ''Loud Noise,'' and ''Phatafat'' or ''Pronto.''

The industry film could lose about $12 million for two unfinished Dutt films, ''Alibag'' and ''Fraud,'' estimated Komal Nata, who runs Film Information, a trade guide.

''It is a body blow to the film industry,'' said Bollywood director Mahesh Bhatt, who directed Dutt in the 1986 hit movie ''Namm,'' or ''Name.''

By RAMOLA TALWAR BADAM Associated Press Writer

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