A team of Pakistani experts investigating Monday's bombing outside the Danish embassy in Islamabad has determined the attack was a suicide bombing.
After examining the scene Tuesday, security officials said a stolen car with fake diplomatic license plates was used in the attack that killed eight people.
More than 25 people were wounded in the explosion that destroyed the embassy's protective walls and demolished the building's security posts.
No one has claimed responsibility for the attack.
But the Danish intelligence service says it suspects al-Qaida or an affiliate may have been involved.
Meanwhile, the Danish Foreign Ministry in Copenhagen held a minute of silence Tuesday for the victims of the attack. Denmark also has raised the threat level for Danish interests abroad.
Denmark has faced renewed terrorist threats since several Danish newspapers reprinted a caricature in February showing the Prophet Muhammad with a turban resembling a bomb.
Originally printed in 2005, the cartoons sparked violent protests across much of the Islamic world, where the drawings were deemed blasphemous.