At least 13 people were killed and dozens injured when a tour bus carrying factory workers to a beach holiday crashed on the Indonesian island of Java on Sunday (February 6).

The bus with 47 passengers was heading from Sukoharjo in Central Java to a family gathering in neighbouring Yogyakarta province when the driver lost control going downhill, police said.

Footage filmed by rescue officer Al Fajar in Bukit Bego in Bantul showed medics at the scene of the crash working to get the injured out of the mangled vehicle.

13 people were killed and dozens more injured after a tour bus carrying factory workers to a beach holiday crashed in Indonesia.

In footage filmed by rescue officer Al Fajar, in Bukit Bego, Bantul, Yogyakarta, show medics and ambulances evacuated the victim from the bus to the hospital.

The bus and its 47 passengers were headed from Sukoharjo in Central Java to a family gathering in neighbouring Yogyakarta province when the driver lost control going downhill, .

"Witnesses we questioned said they saw the driver panicking as he tried to manage the gear stick, so there's an indication the brake was not functioning or faulty," Bantul Police Chief Adj. Sr.Comr. Ihsan told a media briefing.

"Thirteen people died. Some died on the scene and others died while being treated in the hospital, while 34 others were injured," Ihsan said, adding the injured had been taken to three nearby hospitals.

The driver was among those who died when the bus tipped over and slammed into the side of the road, destroying the front of the vehicle and badly damaging its right side.

Multiple passengers sustained head injuries and three toddlers were also hurt, according to the police chief.

Shortly before the crash, passengers had been asked to temporarily disembark, as the bus was having difficulty going uphill, Ihsan said.

Deadly traffic accidents are common in the archipelago nation of 270 million, where vehicles are often old and poorly maintained and road rules are routinely ignored.