Jalalabad: Two suicide bombers on bicycles killed four people and wounded 31 in Afghanistan's eastern Laghman province on Saturday, provincial officials said.

The first bomber detonated his explosives at a police checkpoint in Alisheng district and the second struck several hundred metres further back, Provincial Governor Mohammad Iqbal Azizi told Reuters.

Taliban spokesman Zabihullah Mujahid said the group had carried out the attack and that the target had been Afghan police and intelligence officials.
 
"We are not sure what the target of the second bomber was but we think he may have detonated his explosives prematurely," Azizi said.