On a tip off, police raided a house in Sipri Bazar area last night and arrested 11 people, police said.
Nine laptops, three TV sets, three printers, 33 mobile phones, Rs 17,200 in cash, betting chits and a diary were recovered from the premises, police said.
Police claimed that the centre of the betting racket is in Gwalior in Madhya Pradesh, and from there it has an upward link.
The house owner, who is a history sheeter, managed to escape and efforts were on to nab him, police added.