Bombs kills 9, wound 70 in Afghanistan

(CNN) -- At least nine people were killed and more than 70 others were injured Friday after two Toyota Corollas exploded in southern Afghanistan late Friday, a government official said.

Three police officers were among those killed in the blasts, which occurred in Kandahar city, Jawid Faisal, a spokesman for the governor of southern Kandahar province said.

There was no immediate claim of responsibility. The incident comes amid the Taliban's spring offensive.

It follows a day of carnage in Kabul on Thursday, when six Americans working with NATO's International Security Assistance Force were killed and many Afghans were killed and injured in an attack on a coalition convoy.

The explosives-packed vehicles detonated simultaneously when an Afghan National Police vehicle was passing the area, Faisal said. A large number of people had gathered for a picnic and were leaving the site when the vehicles exploded, he said.