Central intelligence agencies have cautioned the Mumbai police and all subsidiary intelligence agencies operating in the city to remain on high alert on the last day of Ganpati immersions.
This will take place on Sunday, and coincides with the 10th anniversary of the World Trade Centre (WTC) bombings in New York, commonly referred to as 9/11.
Sources in the state home department said the alert had been issued specifically in the backdrop of the blast at the Delhi high court on Wednesday.
The court has signalled the presence of a more sophisticated terror module in the country.
“The powerful explosive Pentaerythritol tetranitrate or PETN used in the New Delhi blast is different from the explosives used in the synchronised blasts in Mumbai on July 13 this year, and also in the previous blasts, in which comparatively low intensity ammonium nitrate had been used.
This has raised fears of the arrival of a vicious module,” sources said.
Sources said the blast also pointed a finger at terror groups like the Hizbul Mujahideen or some directly affiliated terror group of the al Qaeda, who extensively use this kind of explosive in Iraq or Afghanistan.
What is more worrying is that Mumbai has long been on the radar of al Qaeda, which could cash in on the festive gatherings to observe the 10th anniversary of the twin tower carnage and thus signal their entry into India.
The last day of Ganpati immersions would witness massive gatherings at popular beach fronts as well on roads leading to them as the mandals (big and small) bring idols in choc-o-block processions.
The day also coincides with the Mount Mary fair in Bandra, which draws lakhs of devotees to the suburb.
Meanwhile, police commissioner Arup Patnaik said heavy deployment of security personnel would be made all over the city for the final Visarjan.
“We have drawn extra manpower from paramilitary units and reserve units,” Patnaik said. “We are on the alert and taking every possible precaution,” he added, appealing to people to look out for suspicious looking persons/objects and inform the police if they did.