Victims receive treatment outside government buildings in the center of Oslo, Friday. (Photo:  AP Photo/Fartein Rudjord)

The following is a timeline of events during the attacks on a Norwegian government building and a political retreat for young people, according to police and eyewitnesses. All times are local. (Related: Suspect  Anders Behring Breivik Wanted to Start an Anti-Muslim Crusade)

—3:26 p.m.: A car bomb explodes outside the prime minister's office in central Oslo.
—Around 4:50 p.m.: Vacationers at a campground begin to hear shooting across the lake on Utoya, an island where the youth wing of the Labor Party is being held.
—5:26 p.m.: Police in Buskerud receive call about shooting on Utoya.
—5:30 p.m.: Buskerud police alert Oslo, request SWAT team.
—5:38 p.m.: SWAT team is dispatched from Oslo. It drives, deciding that starting a police helicopter would take longer.
—By 6 p.m.: The team arrives at the lake, but it struggles to find a boat to cross over.
—6:25 p.m.: The SWAT team arrives on the island.
—6:27 p.m.: Suspect puts down weapons and surrenders to police.