RIYADH, Sept. 29 (CGTN) -- A fire broke out in the Haramain high-speed rail station in Saudi Arabia's coastal city of Jeddah, injuring at least five people, authorities said on Sunday.

The fire, which caused plumes of black smoke to rise from the roof of the station after fire erupted at 12:35 p.m. (0935 GMT), was brought under control about 12 hours later, the civil defense service said.

A cooling process was under way, it said. Civil defense fought the fire with air support, al-Ekhbariya state television footage showed.

Five people were transported to hospital with injuries, the official Twitter account of the Mecca region reported. It said 16 medical teams were at the scene.

Al-Ekhbariya said four people were treated on site and traffic on the railway line had been suspended until further notice for safety reasons.

The 450-km Haramain Railway linking the two holiest cities in Islam, Mecca and Medina, with the Red Sea city of Jeddah, was opened in 2018 and cost 7.3 billion U.S. dollars.

The station is part of efforts to boost tourism revenue as the country seeks to shed its dependence on oil exports.