Mumbai: Four suspects have been picked up in connection with loot of Rs 2 crore from a cash van in suburban Vile Parle, police said on Saturday.

"We have rounded up four persons. Their questioning is underway. These four along with some of their associates were suspected to have carried out the robbery," a crime branch officer said.

A cash van loaded with Rs 2 crore cash was looted in suburban Vile Parle on Friday by four persons, including one employee of the security firm, police said. The incident took place on Western Express Highway and a hunt is on to track down the prime accused Sadre Alam and his three associates.

Police said the van was loaded with cash of nearly Rs 2 crore by the security company at Lower Parel area. The vehicle with four employees, including Alam left the place to stock up the ATM centres in suburbs.

Read: Security guard spikes colleagues' tea, loots Rs 2 crore from ATM cash van in Mumbai

Alam, who was designated as a guard, asked his three colleagues to stop the vehicle at Worli under the pretext of some work and later brought tea for his colleagues. The tea was later found to have been spiked with sedatives, police said.

As the van reached Parle, two guards fell unconscious while the driver felt drowsy. At that time, a car stopped before the van and three came out from the vehicle. The three accused, with help of Alam, opened the security locker and fled with the cash.