A Kenyan high court judge has temporarily blocked a U.S. government effort to establish an Ebola quarantine facility in Kenya to house American citizens exposed to or infected with the virus.

U.S. officials had previously stated that a 50-bed facility would be operational by Friday at a military air base in Laikipia—a region approximately 100 miles north of Nairobi—for Americans who have been exposed to or infected with Ebola.

The judicial action followed an application filed by the Katiba Institute, a civil society organization. The institute sought to compel the Kenyan government to disclose any arrangement it might have made to accept American citizens in light of the ongoing Ebola outbreak in neighboring countries.

A Kenyan court issued a restraining order on Friday stating that “a conservatory order is hereby issued restraining the respondents from establishing … any Ebola exposure, quarantine, isolation or treatment facility in Kenya.”

The Katiba Institute’s executive director, Nora Mbagathi, stated: “No one is saying that we are against international collaboration and support when it comes to tackling that crisis. But there are procedures and processes in the Constitution and they are there for a reason.”

U.S. officials had indicated on Thursday that the United States would commit $13.5 million to Ebola preparedness efforts in Kenya, following a call between Kenyan President William Ruto and U.S. Secretary of State Marco Rubio.

President Ruto emphasized Kenya’s vigilance: “As a key regional gateway, financial hub, and host to major international organisations, Kenya remains vigilant and committed to swift, coordinated action to protect regional health security following the Ebola outbreak in neighbouring countries.”

The Kenyan government has 48 hours to respond to a constitutional petition filed by the Law Society of Kenya against the proposed facility.