Their actions are contrary to government directives and instructions to prevent further spread of Coronavirus.
Chief Inspector of Police (CIP) Bonaventure Twizere Karekezi, the Police spokesperson for the Western region, said that the violators are from different religious denominations.
They entered the valley at about 5a.m., he said.
"Nyakabuye Police station received information earlier that morning about a big group of people that had sneaked into the valley to pray," CIP Karekezi said.
"The Police station worked with local leaders and DASSO to arrest all the 24 people in the valley. They belong to different religious denominations including those from ADEPR, Seventh Day Adventist, Catholic and Methodist," he added.
"Usually, conducting such faith-based services in the wildness is prohibited, but worse still they violated the directives as no one was even wearing a facemask, they came from different places where one person infected with COVID-19 would easily infect others; they were in the middle of the valley in the well, which has waterfalls and a hot spring; this was too risky to their lives."
CIP Karekezi thanked those who provided information on the unlawful and life-threatening practices, and called for the continued spirit of partnership to ensure that the directives are respected and violators penalized accordingly.