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Chipotle Mexican Grill's food-safety problems just got worse.

Health officials closed a Chipotle location in Seattle on Thursday, citing repeated food safety violations within the past year.

The closure is the latest blow to Chipotle's food safety image. An outbreak of norovirus at a restaurant near Boston College sickened 141 people. In addition, a widespread E. coli outbreak linked to the chain has sickened 52 people across nine states, including 27 people in Washington state.

Chipotle stock was 1.2 percent lower on Friday morning. Since news of the E. coli link surfaced in October, Chipotle stock has dropped 11 percent.

Read MoreE. coli isn't Chipotle's only problem

Before suspending the Seattle restaurant's permit, health inspectors found several ingredients, including chicken, brown rice, shredded beef, cooked beef and fajita vegetables, were not hot enough. It was its third critical violation in 12 months.

"An inspector found that some hot food on the fax line (which is a back of house make line that services online orders), was not being held to proper temperatures. We are investigating the cause of that and will address it," Chipotle spokesman Chris Arnold said in an email.