For the second time in as many days, custodial staff from Spokane Public Schools is performing a deep cleaning of a district building after possible cases of COVID-19 were detected.

On Monday, the Spokane Regional Health District notified the district of possible exposure to coronavirus in the Sacajawea Middle School community, Principal Jeremy Ochse notified families.

“Our custodial staff will be in to do cleaning of high-touch areas overnight,” Ochse said.

Like other buildings in Spokane Public Schools, Sacajawea is now closed to students through at least April 24.

The health district offered no additional details on possible exposure to students or staff at the school.

On Sunday, custodial staff disinfected Bemiss Elementary School after a parent tested positive last week for the coronavirus.

Custodians used an electrostatic disinfection system known as Clorox 360, which the district uses during periods of higher absenteeism due to illness, especially stomach bugs.

However, the possible exposure may have affected attendance on Monday. Only 20% of Bemiss students attended school on Monday, according to Principal Rachel Sherwood.

“But we just connected with the kids that we have,” Sherwood said.