DUBAI, United Arab Emirates (AP) — Qatar recently arrested at least 60 foreign workers who protested going months without pay and deported some of them, an advocacy group said, just three months before Doha hosts the 2022 FIFA World Cup.

The move comes as Qatar faces intense international scrutiny over its labour practices ahead of the tournament. Like other Gulf Arab nations, Qatar heavily relies on foreign labour. The workers’ protest a week ago — and Qatar’s reaction to it — could further fuel the concern.

The head of a labour consultancy investigating the incident said the detentions cast new doubt on Qatar’s pledges to improve the treatment of workers. “Is this really the reality coming out?” asked Mustafa Qadri, executive director of the group Equidem.

In a statement to The Associated Press on Sunday night, Qatar’s government acknowledged that “a number of protesters were detained for breaching public safety laws.” It declined to offer any information about the arrests or any deportations.

Video footage posted online showed some 60 workers angry about their salaries protesting on August 14 outside of the Doha offices of Al Bandary International Group, a conglomerate that includes construction, real estate, hotels, food service and other ventures. Some of those demonstrating hadn’t received their salaries for as many as seven months, Equidem said.

The Qatari government acknowledged that the firm hadn’t paid salaries and that its Labour Ministry would pay “all delayed salaries and benefits” to those affected.

“The company was already under investigation by the authorities for nonpayment of wages before the incident, and now further action is being taken after a deadline to settle outstanding salary payments was missed,” the government said.

The World Cup will start this November in Qatar.