TRIPOLI, May 21 (Xinhua) -- A total of 510 people have been killed and 2,467 others injured in the fighting in and around Tripoli, the World Health Organization (WHO) said Monday.

"The toll from the armed conflict in Tripoli, Libya continues to climb. As of 19 May, 510 people have died and 2,467 people have been wounded," WHO tweeted.

The east-based army, led by Khalifa Haftar, has been leading a military campaign since early April to take over Tripoli, where the UN-backed government is based.

Libya has been struggling to undergo a transitional period amid chaos since the fall of former leader Muammar Gaddafi in 2011.