Where did the first incident, the explosion happen?

It has been a day of bloodshed in Oslo, Norway. At mid afternoon local time, a mass explosion tore apart a government building housing the prime minister’s office. At least seven people are dead there. The prime minister was not in the building at the time of the blast. At a nearby youth camp, there are unconfirmed reports of many dead after a gunman opened fire just hours after the blast in downtown Oslo.
    The center of Oslo sealed off by the police after a very large blast outside the main government building. Hours afterwards, there are unconfirmed reports of people still trapped. The attack in a quiet city known for its association with the Nobel Peace Prize scattered rubble, blast and papers over a wide area. The Prime Minister Jens Stoltenberg says all government ministers are thought safe but described the situation as’Very serious" The city was still gripped by shock as reports emerged that (8) a man dressed as a police officer had opened fire on an island near Oslo, venue for a youth meeting of Norway’s Labor Party. The prime minister’s due there tomorrow.
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