Roughly 300 employees of the Homeland Security Department have tested positive for COVID-19, and more than 8,500 are under quarantine because of possible exposure to the coronavirus, sidelining them as the agency struggles to respond to the pandemic.

Those numbers are according to an internal report at the department from Monday, which the Los Angeles Times obtained from a House Democratic aide. It showed that 292 employees had tested positive for COVID-19 and 8,524 more were under “Self-Quarantine & Self-Monitoring.”

The numbers of sick, infected and exposed continue to increase at the federal government’s third-largest department, suggesting a mounting toll even as it is helping to manage the nationwide mobilization against the virus. The department includes such critical agencies as the Federal Emergency Management Agency, the Transportation Security Administration, the Border Patrol, and Immigration and Customs Enforcement.

Read more: Los Angeles Times