Tanzania’s main opposition party on Wednesday accused police of disposing of the bodies of hundreds of demonstrators killed in a crackdown following a disputed election that incumbent President Samia Suluhu Hassan won by a landslide.

Protests broke out in the East African nation during and after the vote last Wednesday as demonstrators voiced outrage over the exclusion of Hassan’s main rivals.

Authorities imposed a curfew and an internet blackout while security forces clashed with protesters.

The opposition Chadema party was barred from running in last week’s parliamentary and presidential elections. Its leader, Tundu Lissu, has been detained on charges of treason after Hassan’s government accused him of planning to disrupt the October 29 election.

On Wednesday, Chadema told CNN it had documented 2,000 deaths and accused police of disposing of hundreds of unknown bodies at an undisclosed location.

“As days keep going, we’re establishing and finding out that more people have died in different regions,” Chadema’s director of communications, Brenda Rupia, told CNN.

So far, “we have 2,000 (dead) people documented,” including more than 100 from Chadema, she said.

CNN has not been able to verify the death toll, and a government spokesperson did not respond when asked about the response to the protests. The government previously dismissed the opposition toll as “hugely exaggerated.” But the African Union and the foreign ministries of Canada, Norway, and the United Kingdom have expressed concern about reports of high numbers of fatalities.

Hassan, the country’s first female president, was sworn in on Monday for a second term after an election in which she ran virtually unopposed, and which regional observers said “fell short” of democratic requirements.

In her inauguration speech, she acknowledged people had died during the protests, but did not provide a death toll.

“Most bodies are still at the hospitals (and) the police are stopping people from taking dead bodies away,” said Rupia, adding, “the police have thrown away over 400 bodies. We don’t even know where they’ve taken them.”

A spokesperson for the Tanzania Police Force did not respond to CNN’s request for comment.

This week, the police barred people from sharing photos and videos “that cause panic” after images and footage of dead bodies began circulating on social media while internet connectivity was being restored.