Two suicide bombers killed 29 worshippers in a Shiite mosque in Baghdad Tuesday. At least 55 others were wounded.
Officials say the first bomber blew himself up at a nearby checkpoint to serve as a distraction for authorities, while the other slipped past the concrete blast walls and entered the mosque during prayers.
University student, Ali Faleh, said he was nearby at a local shop when he heard the explosion.
"Everybody ran to the blast site, and I saw the body of a colleague who used to be in my class," he said. "The aim of today's attack was only to hurt the Shiites who were there to study or pray, not to fight or kill anybody else."
No group has claimed responsibility yet, but similar attacks have been carried out on Shiites by al Qaeda.
Nearly 2,000 in Iraq have been killed since the start of April. The recent surge in violence is renewing fears of civil war in the country.
Besides the recent spike in violence, Iraq has also seen a rise in sectarian and political tensions.