Sunday Times photographer Paul Conroy describes the impact of the February 22 shelling of the Baba Amr district in the Syrian city of Homs. Conroy escaped after suffering leg injuries.

Nothing prepared me for what we saw in Baba Amr – Paul Conroy (mp3)

The bombardment killed U.S. journalist Marie Colvin, French photographer Remi Ochlik and seriously injured French journalist Edith Bouvier.

Conroy spoke at an event hosted by the International Network on Explosive Weapons (INEW) on Tuesday in London.

INEW released a study this week, which showed that civilians accounted for 71 percent of people killed and injured by explosive weapons in 2011.

Related story: More than 70 pct of war casualties civilian in 2011 – report