Poland's Defense Ministry says a Polish soldier has died of wounds suffered in an explosion of a roadside bomb in Afghanistan.

The ministry said that Master Cpl. Jan Kiepura was injured early Monday while on a safety-checking mission with his motorized platoon in the Ghazni province. He received immediate medical aid but could not be saved, said Marek Pietrzak, spokesman for the ministry's Operations Command.

The 35-year-old is the 40th Polish soldier to be killed in Afghanistan since 2007.