Islamabad, Nov. 11 -- As many as 12 people were killed and 20 others injured in an explosion at the district and sessions court in Islamabad's G-11 area on Tuesday, according to Dawn.

A security source told CNN that the blast near the city's High Court is being investigated as a suicide attack.

12 people are dead and 20 sustained injuries in the blast, a senior Islamabad police official was quoted by Dawn.

The cause of the explosion is still under investigation.

Videos circulating on social media showed flames and thick smoke rising from a charred vehicle behind a security barrier.

Security forces have cordoned off the area, and rescue and investigation teams are on site. Authorities have yet to release detailed information regarding t...