LAHORE: At least 70 people were killed when gunmen wearing suicide vests and carrying grenades attacked two worship places in Lahore on Friday, an administration official said.Squads of militants attacked worship places of the minority Ahmadi sect in the neighbourhoods of Garhi Shahu and Model Town, seizing hostages and sparking several hours of gun battles with police, officials said."At least 70 people have been killed in both the attacks," Sajjad Bhutta, the top city administrative official in Lahore, told reporters."Some of the attackers were wearing suicide vests in Garhi Shahu," he said.