Hundreds of arrests were made after violence broke at a demonstration earlier in the week.

The trouble seems to have begun about a week ago. Thousands of Bangladeshis employed as cleaners and rubbish collectors went on strike.

They had a long list of grievances surrounding pay and conditions of service. And on Monday night they protested in large numbers at two sites where they're housed outside Kuwait City.

One of the demonstrations is reported to have turned violent, with workers smashing windows, vandalising cars and clashing with the police -- who moved in with tear gas and clubs.

Several hundred of the demonstrators were arrested. Around two hundred have already been sent back to Bangladesh, and more of those allegedly involved in the violence are expected to follow.

But the Kuwaiti government is reported to have acknowledged that abuses by employers were responsible for the strike in the first place.

The state news agency was quoted as saying that there had been grave violations of workers' rights.