Taxi-hailing company Uber has suspended its service in Abu Dhabi, the capital of the United Arab Emirates.
An Emirates newspaper, The National, reported that as many as 50 drivers had been arrested over the weekend. The report quoted one industry source as saying there was confusion as to why the drivers had been detained.
In a statement Uber said: ""This is a temporary suspension and we will let you know of any further updates."
Both Careem and Uber said that services in neighbouring Dubai were operating as normal.
Uber has been investing heavily in the Middle East, helped by a recent $3.5bn investment from Saudi Arabia's Public Investment Fund. But the company's international expansion has been hampered by legal battles:
- In the UK two drivers have taken the company to an employment tribunal, saying that they should be offered holiday and sick pay
- In Taiwan Uber is facing a ban after officials said the firm was not operating lawfully