Fiat Chrysler Automobiles closed a Michigan factory Wednesday morning that builds the Ram 1500 — with no re-open date scheduled.

"Out of an abundance of caution for the health and welfare of the employees at the Sterling Heights Assembly Plant, FCA is suspending production," said spokeswoman Jodi Tinson in a statement. "Employees on the first shift have been sent home. Workers on the second shift should not report. The company is working to align the plant’s shift pattern with yesterday’s announced agreement with the UAW. Further information regarding the resumption of operations will be shared later today."

Tinson earlier confirmed that the company removed workers from the plant late Tuesday around 11 p.m. and returned workers at 5 a.m. So the shutdown occurred about three hours after re-opening.

A spokesman for the UAW said a comment would be coming soon.

The action follows two deep cleans at the factory following an autoworker testing positive for coronavirus.

Contact Phoebe Wall Howard at 313-222-6512 orphoward@freepress.com.Follow her on Twitter@phoebesaid. Read more on Ford and sign up for our autos newsletter.