Police in southern China have arrested a man suspected of threatening to blow up a commercial jet, following a similar incident affecting a flight from Beijing. Police arrested Xiong Yi, 29, in Dongguan city on Saturday after tracing an anonymous phone call threatening a flight from Shenzhen airport on Thursday. Xiong confessed that he warned airport officials that explosives would be detonated on a Shenzhen Airlines flight 45 minutes after take-off, forcing air controllers to divert the flight. After inspecting the grounded plane, police found no dangerous items on board.

The incident happened a day after an Air China plane bound for New York was forced to return to Beijing following a similar unspecified threat.

After police determined that no dangerous materials were on that flight, the Air China plane flew to New York following a delay of several hours. Authorities are still investigating the incident, while Beijing airport authorities warned passengers to be prepared for increased security measures.