Al Qaeda or one of its affiliates was likely behind the blast outside the Danish embassy in Pakistan, Denmark's intelligence service said Tuesday.
The massive blast in the capital city of Islamabad killed at least six people, injured 24 others and damaged the embassy wall and a neighboring United Nations building. It also left a four-foot deep crater in the road.
"It is ... the assessment that al Qaeda or an al Qaeda-related group is the possible perpetrator behind the attack," Carsten Thomsen, spokesman for Danish Security and Intelligence Service (PET), told CNN.
No group has yet claimed responsibility for the attack.