Security forces in Myanmar opened fire on protesters Sunday, as demonstrations against military rule in the country enter their second week.

There was no immediate confirmation of a death toll and no comment from the government.

The soldiers were deployed to protests at a power plant in the Northern state of Kachin Sunday. Videos from the protest show members of the military firing into crowds to disperse them, but it was not clear whether the bullets were rubber or live ammunition.

The U.S. Embassy in Yangon warned there was a possibility of an internet interruption overnight between 1:00 a.m. and 9:00 a.m. local time.

The protests come as the military junta continues to tighten its grip on power more than a week after ousting de facto leader Aung San Suu Kyi. One of her closest aides, Kyaw Tint Swe, was among a handful of members of Suu Kyi’s National League for Democracy party taken from their homes by security forces overnight and detained. The leadership of Myanmar’s electoral commission has also reportedly been detained. The commission rejected the military’s claims of widespread fraud in November’s elections, which the NLD won in a landslide.