Three days after Capital Metro announced that four of its employees tested positive for the coronavirus, the public transit agency said April 5 that one of those employees has died.

The employee was a bus mechanic who did not have any interaction with the public, according to a statement from Capital Metro. The agency will not be releasing his name.

Capital Metro did not release the individual’s cause of death, but did confirm in a statement that he was one of the employees who tested positive for the coronavirus earlier this week.

The other three Capital Metro employees to test positive are bus drivers who last worked March 25 or March 26.

As of April 4, there have been 460 positive cases of the coronavirus confirmed in Travis County and six deaths. In the last week, cases have more than doubled—from 206 on March 30 to 460 on April 4. Statewide, according to Texas Health and Human Services, there have been 6,110 cases and 105 deaths.