Protests held this spring to demand a public vote on the border agreement with neighboring Chechnya turned violent when armed security forces tried to disperse them. Up to 19 officers were dismissed and their battalion disbanded afterward for allegedly siding with protesters.

Thirteen police officers in Russia’s republic of Ingushetia will stand trial for refusing to disperse protesters during clashes over a contentious land-swap deal, the MBKh Media news website has reported.

The 13 law enforcement officers face up to five years in prison for failing to comply with orders to break up the protests, their lawyer, Magomed Kuriyev, told MBKh Media on Wednesday.

“There’s video online that shows they didn’t do anything illegal but instead tried to talk to the elders and convince them to disperse,” Kuriyev was quoted as saying.

“There were several witnesses; two said that they didn’t see anything at all and one gave a very evasive and strange testimony,” he said.

Kuriyev added that the trial will be held behind closed doors and that the defendants have signed non-disclosure agreements.

A court had earlier struck down the 13 officers’ motions seeking reinstatement at work, Kuriyev told MBKh Media.