The arrested have been identified as Vijay Nahar, Ranjit and Pawan. Nahar was arrested from Palwal while Ranjit and Pawan were apprehended from Usmapur.
Around Rs 40 lakh was allegedly recovered from them.
Earlier, police had allegedly recovered Rs 85 lakh from Nahar's relatives.
Vijay, also a police informer, allegedly entered the world of crime in 1996 by stealing car stereos and later cars.
Police have so far arrested ten persons, including three who carried out the heist in Defence Colony on September 28. Two more persons directly involved in the robbery are still on the run.
Two youths, who were allegedly involved in the planning were also arrested besides two relatives of a suspected robber who helped them in hiding a portion of the money.
The gang had waylaid the cash van, pinned down a security guard and shot him after he tried to snatch their weapons. They fled the spot in the cash van leaving behind the car in which they were following the vehicle. The guard later succumbed to bullet wound.
It was a raid at the main accuse Har krishen's house in Khirki that helped police in its trail. The key of the looted cash van was recovered in his house. Harikrishen and his wife Rashmi were apprehended from Banda in UP on October three.
The first to be arrested was Deepak Sharma, brother of Harikrishen, on September 29, a day after the heist.
Police on September 29 managed to identify the house which was believed to have been used by the suspects. It belonged to Hari Krishan who had shifted recently and purchased it in his wife's name.
Raids were conducted at this house and from there, police managed to recover the keys of the cash van, which was abandoned by the gang. Some other documents were also seized from the spot which indicated that the suspects had visited and stayed there.
