Shiite Muslims, many kneeling in prayer, were attacked in their mosques and on the streets on the eve of their holiest day, with five bombings killing 36 people in the deadliest day in Iraq since the January 30 national elections.

Four explosions ripped through Baghdad today, killing at least 28 people and injuring dozens on the eve of Shiite Islam’s holiest festival.

A trio of suicide attacks has killed at least 27 people and injured dozens in Baghdad, officials said.