LONDON, England (CNN) -- A British Royal Marine was killed Sunday in southern Afghanistan when an explosion struck his patrol in Helmand province, the Ministry of Defense said.
"The death of this Royal Marine is a tragedy for everyone in Task Force Helmand," Commander Paula Rowe, said in an MoD statement. "Whilst words cannot ease their loss, our thoughts and prayers are with his family and friends at this desperately sad time."
The marine's identity was not released.
The incident happened in the Kajaki area of Helmand on Sunday morning, the MoD said.
It is the second British service member killed in Afghanistan this year. A British soldier was killed by an explosion in the Garmsir district of Helmand province on January 1.
Fifty-one British troops died in Afghanistan in 2008 -- the highest death toll for any year since the mission began in October 2001, the defense ministry said.