Prime Minister Manmohan Singh [Images] on Friday assured that he would talk to concerned authorities about the delay in the judgment of the 1993 serial blasts that had rocked Mumbai.

Dr Singh, who was in Mumbai to visit the injured of the July 11 synchronised train blasts and take note of the investigation process, was answering queries at a media conference at the airport.

"I am aware of the delay and I will talk to the concerned authorities on this issue," Dr Singh said.

Even the Bombay high court has expressed concern over the delay and written to designated Judge P D Kode asking him when the judgement would be delivered.

About 123 accused, including film actor Sanjay Dutt [Images], are facing the trial which commenced in July 1995. More than 600 witnesses have deposed and 13,000 pages of evidence have been recorded.

Among the accused facing the trial are extradited gangsters Ejaz Pathan, Mustaffa Dossa and Abu Salem [Images].

According to the Central Bureau of Investigation, the blasts were masterminded by underworld don Dawood Ibrahim [Images] to avenge the demolition of the disputed structure in Ayodhya.

Thirteen explosions had shattered the city on March 12, 1993, killing 257 persons and injuring 713.

Property estimated at Rs 27 crore was destroyed in the serial blasts.

About 80 accused, including Dutt, are on bail while others are in custody.