Flight AI-2030 landed safely at Jaipur International Airport at 9:35 a.m. (0405 GMT) and was moved to an isolation bay for security checks as authorities investigated the incident, India Today reported, citing sources.
Initial checks found that the aircraft was operating normally, the report said.
According to preliminary information, Ahmedabad Air Traffic Control received an emergency signal from the aircraft for a few seconds at around 9 a.m. (0330 GMT).
The pilot reportedly activated Squawk 7500, an internationally recognized transponder code used to alert air traffic control to a suspected hijacking or unlawful interference with an aircraft.
Airport management said all passengers were safe and were being deboarded, adding that the situation was normal.
Meanwhile, the emergency landing followed a bomb threat, Hindustan Times reported, citing police sources.