NEW DELHI: Fugitive terrorist Dawood Ibrahim was admitted to Karachi’s military hospital on Friday night after suffering heart attack, claimed media reports on Saturday. It's being said the Mumbai serial blast mastermind has stopped responding to the medicines and is in a very sensitive state.

However, Dawood's right-hand man, Chhota Shakeel dismissed the reports, saying he was fine.

The 61-year-old gangster was reportedly kept on an artificial breathing system that is ventilator. His health deteriorated after his brain tumor surgery.

The United States had already designated underworld don Dawood as a global terrorist having links with Al Qaeda and financing activities of Laskhar-e-Tayiba and other terrorist organisations.

Dawood is wanted in India for the 1993 serial bomb blasts in Mumbai in which 257 people were killed and nearly a thousand injured. He is also accused of masterminding other terror attacks and of money laundering and extortion.

His syndicate dabbles in everything ranging from cricket betting, arms supply, narcotics trade, film-financing, real estate and gutkha manufacturing.

1993 Mumbai blasts:

As per reports, Ibrahim ordered and helped organise the bombings in Mumbai, with the help of his aides Tiger Memon and Yakub Memon.

The Supreme Court on March 21 2013, in its judgment sentenced the accused.

At 1:30 p.m. a powerful car bomb exploded in the basement of the Bombay Stock Exchange (BSE) building. About 50 people were killed in the explosion.

About 30 minutes later, another car bomb exploded in front of the Mandvi Branch Corporation Bank near Masjid, and therafter between 1:30 p.m. to 3:40 p.m. a total of 12 bombs exploded that shook Mumbai inside out.

Most of the bombs were car bombs, but some were in scooters.

The 1993 blasts were the first in India in which RDX was used. The CBI has proved in court that the RDX came from Pakistan.