ALBUQUERQUE, N.M. (AP) — New Mexico Gov. Michelle Lujan Grisham is scheduled Tuesday to provide an update on COVID-19 cases after a string of record-breaking daily case counts prompted more restrictions last week and officials continue to crack down on employers who they say aren’t following the rules.

The state’s Occupational Health and Safety Bureau has opened an investigation of Sandia National Laboratories after receiving a complaint about alleged violations of the state public health order.

A letter sent Monday by the bureau and obtained by The Associated Press alleges that the national laboratory failed to comply with the health order by not limiting operations to remote work to the greatest extent practicable to prevent the spread of COVID-19. The state claims employees were ordered to cease telework and report to work in-person.

The state is requiring the lab to inform all employees and contractors of the investigation. The lab also has been ordered to complete an internal investigation to identify the root cause of COVID-19 cases that occurred in the last two weeks for each employee and contractor who tested positive.

If the lab doesn't comply, the state says it's authorized to post a notice of imminent danger on lab property and assess civil penalties up to $134,904 per violation.

“It is clear that neither federal (Occupational Safety and Health Administration) nor the (U.S. Department of Energy) are effectively holding Sandia National Laboratories accountable for protecting its employees from occupational exposure of COVID-19,” the letter states.

Lab spokeswoman Kristen Meub said Sandia's top priority is to keep employees safe and healthy and that stringent safety measures have been implemented during the pandemic. She said Sandia is coordinating with the Energy Department and National Nuclear Security Administration to respond to the state in a timely manner.

“From the start of the pandemic through Oct. 15, the majority of Sandia COVID cases were acquired offsite and outside work hours,” Meub said. “As a result of our protective measures, such as safety protocols onsite, contact tracing has confirmed the vast majority of cases among Sandia employees was caused by community spread transmission away from the worksite.”

More than 100 workers at Sandia locations in New Mexico and California have tested positive since the start of the pandemic. The lab has more than 14,000 workers, with more than 12,000 of those located in New Mexico.

While the majority of employees work from home, Sandia officials say the lab has essential work that must be performed onsite to meet national security responsibilities. For those workers, the lab provides personal protective materials such as masks and sanitizer and daily health checks are done before they're allowed onsite.

The lab also provides onsite testing with results in less than 24 hours, contact tracing, increased cleaning and disinfecting and other measures per Centers for Disease Control and Prevention guidelines. Lab officials say Sandia’s protocols exceed the state requirements in many cases.

Despite having some of the strictest rules in the U.S., Lujan Grisham's administration has been struggling in recent weeks with a surge in cases and increases in transmission and positivity rates. Officials also are concerned about an increase in hospital admissions.

“If COVID-19 continues to exponentially spread like last week, New Mexico will not have the health care and hospital capacity for every New Mexican who needs care,” the governor said in a Tweet on Tuesday.

New Mexico has reported more than 37,300 COVID-19 cases and 935 deaths. Hospitalizations stand at 183, marking a nearly 90% increase over the last two weeks.