Indian police say they have found a huge supply of explosives near the city of Bombay (Mumbai).
Inspecting the wreckage of the August attacks in Bombay
Four people have been arrested after police stopped a van carrying the suspect material.
The police say they found 700 detonators and 750 kilograms of ammonium nitrate in the van which was intercepted early on Wednesday.
Bombay was hit by a double bomb attack blamed on Islamic militants in late August that left some 50 people dead.
The van was stopped in the town of Vasai, some 20 kilometres (12 miles) north of Bombay, the AFP news agency reports.
Police say the van may have been heading for Bombay.
A number of people have been arrested in connection with the August explosions in Bombay.
The alleged mastermind was shot dead by police last month.