Police in the United Arab Emirates say a gravel-filled truck with faulty brakes has rammed a bus, killing at least 22 migrant workers.

Monday's crash near Al Ain, about 150 kilometers (90 miles) east of Abu Dhabi, also injured 24 people. Envoys from Pakistan, India and other South Asian countries rushed to the scene.

The nationalities of those killed were not immediately announced, but South Asians comprise the vast majority of laborers in the UAE and other Gulf nations.

Workers are usually transported by bus from labor camps to job sites.

Brig. Gen Hussein Ahmed al-Harethi, head of Abu Dhabi's police traffic division, told the official news agency WAM that the truck driver lost control after the vehicle's brakes failed.