In a major security breach, a drone was spotted inside the premises of the Indian High Commission in Islamabad on Sunday night. India has taken up the matter with Islamabad over the security breach, officials said on Friday. The details of a drone sighting inside the Indian Embassy in Islamabad have emerged days after bombs were dropped at the Indian Air Force station in Jammu airport in the early hours of Sunday, the first time that suspected Pakistan-based terrorists used unmanned aerial vehicles in an attack.