[Updated at 1:27 p.m. on Friday, April 17, 2015, to add comment from Batik Air, minor edits]

Jakarta. A Batik Air plane en route from Ambon to Jakarta on Friday was forced to make an emergency landing at Makassar's Sultan Hasanuddin International Airport after two company staffers received bomb threats on their mobile phones.   

Batik Air, the full-service subsidiary of low-cost carrier Lion Air, immediately alerted authorities and flight 6171 was diverted for a security check, state-run news agency Antara reported.

The text message that two Batik Air staffers received shortly after the plane departed at 6:40 a.m. local time, read, in Indonesian: "There is a bomb ready to explode on board Batik Air [April] 17 AMQ JKT."

AMQ is the International Air Transport Association airport code for Ambon's Pattimura Airport, while JKT stands for Jakarta, yet is not an official IATA code.

Batik Air flight 6171 was headed for Soekarno-Hatta International Airport on the outskirts of Jakarta. That airport is designated with the code CGK.

The plane, which carried 125 passengers, was checked by officers from the South and West Sulawesi Police's bomb squad, but no explosives were found.

“It is safe. There is no bomb in the plane,” Batik Air president director Achmad Luthfie told Antara. “The squad checked the plane, the passengers, and the luggage — it’s all safe.”

Achmad added that there were no indications that any of the passengers had something to do with the bomb threat.