Two men, allegedly the main perpetrators of the blast outside Punjab BJP headquarters here, have been arrested, Punjab Director General of Police Gaurav Yadav said on Sunday.

They were arrested in Haryana’s Rewari on Saturday night, he said. “They are Gurtej Singh and Amanpreet Singh. Both are residents of village Ratangarh under Morinda Police Station in Punjab's Rupar,” the police chief said at a press conference here.