Diamond jewellery worth over Rs 35 lakh, gold ornaments weighing 4.155 kg, 18 kg silver and over Rs 4 lakh were recovered from them, Inspector General of Police (Kanpur range) Alok Singh said.
Mithun Mandal and Pheku Barsad, both residents of Jharkhand, and Ram Kumar Sharma of West Bengal were arrested, the officer said.
Sharma was also involved in looting jewellery worth Rs 2 crore from a showroom at Kanpur's PPN market in 2010, he said.
Two members of the gang, Mamu and Krishn Ravidas, were still at large, the officer said, adding that raids were being conducted in their hideouts.
Bhanu was also running an international car thief gang, adding that his wife Mannu Devi and son Akshay Pratap Singh, who are members of his gang, were arrested, the police officer said.
A doctor, Sanjeev Arya, was arrested in connection with the robbery. Gold ornaments weighing 21.940 grams were recovered from him.
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