After five Shenzhen-bound flights were grounded due to bomb threats on May 15, the curse of such threats continued to plague the country on May 17 when over ten flights were grounded, including ones from Guangzhou and ones destined for Shenzhen Nandu Daily reports.

Courtesy of Southern Metropolis Daily

Unlike previous bomb threats made by phone, the caller did not specify the flight numbers of the planes targeted, which complicated things even further. On the night of the chaos, media reported that a suspect had been arrested, but airport security later said they hadn’t yet found a suspect.

The first such threat came at 3 p.m. when a threat was made on flights going from Guangzhou to Shanghai. Because no specific flight number had been given, one flight had to divert to Fuzhou, and another had to return to Guangzhou Baiyun airport.

The chaos continued and mostly involved flights from Chongqing and Guangzhou to a variety of cities, including Shenzhen. Four airlines were affected.

Planes were searched for bombs, but none were found.

Whoever does get caught is in big trouble. According to the Civil Aviation Administration of China, spreading false terrorist information brings a minimum five year sentence, in accordance with the provisions of section 291 of the Penal Code. If the consequences of this unfunny practical joke prove to be “serious,” then he or she could face a 15 year sentence.