The Trump administration is refusing to repatriate Americans exposed to Ebola amid the outbreak still raging in the Democratic Republic of the Congo. But the plan to send US citizens to Kenya has hit a snag, and officials are still scrambling to find other countries that might take them.

Earlier this week, it was revealed that the administration had devised a plan to establish a makeshift quarantine and treatment facility in Kenya—instead of bringing its citizens home for high-quality care at specialized facilities built for this purpose. According to the initial plans, the US facility would be in Laikipia, about 120 miles north of Nairobi, where the US has an air base. Initially, the plan was to set up a 50-bed quarantine facility that was expected to be operational today, May 29. Then, in a second state, officials would set up isolation and biocontainment units to house Americans infected with the virus.

But after a series of events on Thursday and Friday, that plan has now been stalled. The Katiba Institute, which advocates for Kenyans’ constitutional rights, filed the petition on Thursday to challenge the establishment of the quarantine and treatment facility.

“The secretive, unilateral establishment of an Ebola quarantine facility raises grave constitutional concerns regarding the rights to life, health, fair administrative action, public participation, and parliamentary oversight,” Katiba said in a statement posted on social media.

Katiba is seeking the government’s preparedness plan to prevent or respond to the potential spread of the Ebola virus, which is not present in Kenya. The institute is also seeking disclosure of the terms of any agreement between Kenya and the US regarding the facility. “At its core, the case is about preserving constitutional accountability, protecting public health, and ensuring that no government may place expediency above the lives and safety of the people of Kenya,” Katiba said.