NEW DELHI: Indian detectives have charged six men, including a Kashmiri student with alleged links to a militant group, over a bomb blast at the Delhi High Court that killed 15 people.

The attack in September ripped through a crowd queueing to enter the court complex, killing 11 people on the spot with four more later dying of their injuries.

In documents released on its website, the National Investigation Agency (NIA) identified Wasim Akram Malik, who was studying medicine at a college in Bangladesh, as the plot leader.

“The conspiracy... was hatched by the accused Wasim Akram Malik and terrorists of the Hizb-ul Mujahideen,” the agency said.

Hizb-ul Mujahideen is a militant outfit that has been fighting for more than 20 years against Delhi's rule over the Muslim-majority region of Kashmir.

Malik and five others have been charged over a series of crimes, including waging war against India, murder and terror acts, the NIA said.

The charge sheet, filed in a Delhi court on Tuesday, described Malik as a “leaderless jihadi” who had “strong feelings against the perceived discrimination against the Muslims”.