Bomb threat call received at call center for a Delhi-Pune flight; nothing suspicious found

A bomb threat was made to a GMR Group-run call center here regarding a Delhi-Pune Vistara flight that was set to depart from Delhi airport this morning.
Soon after, the aircraft was kept in isolation so that security authorities could properly investigate it; according to an official, nothing unusual was discovered on board. The plane was supposed to take out at 8:30 in the morning.
“UK-971 Delhi to Pune flight received bomb threat at GMR call center in Gurugram,” a security agency official told ANI.
There were more than 100 passengers in the aircraft and all the passengers’ luggage were de-boarded. The passengers are currently in the terminal building and they were served refreshments, the official said.
As per the Standard Operating Procedure (SOP), the plane cannot be scheduled until the security agencies give clearance and go ahead with the flight. The flight will leave for the destination (Pune) as soon as the final clearance is received from the security agencies.