BURLINGAME (CBS SF) – An elderly patient at a Burlingame assisted living center who tested positive for coronavirus, has died.

“Our thoughts are with their family during this difficult time,” said Mike Gentry, Senior VP of Care at the Atria Burlingame Assisted Living and Memory Care Center.

READ MORE: SF Citizen Detective Finds Her Missing License Plate on Identical Car Stolen From Another Resident

Monday’s death comes on the heels of several confirmed cases of COVID-19 at the senior care facility. The first patient to test positive was hospitalized on March 12. It is not clear if that is the same patient who passed away.

“On March 15, we received news of a confirmed case of COVID-19 at our community,” said Gentry, in a statement. “Since then, six additional residents have been tested. As of today, five residents tested positive and two residents tested negative.”

READ MORE: Caltrans Predicts Highway 37 To Be Permanently Flooded by Mid-Century; Seeks Solutions For Vital Corridor

Gentry says the facility is working closely with the San Mateo County Health Department.

“They have been on site to confirm the proper control measures are in place,” said Gentry. “We continue to work closely with them to monitor the situation and take the necessary steps to protect our residents.”

Atria Senior Living cares for more than 21,000 seniors at some 179 facilities in the U.S. and Canada, and employs more than 12,500 health care workers.

MORE NEWS: Jewelry Thieves Trick Victims In Union City With Bait-and-Switch Technique Used In Similar Robberies

So far, there have been 13 deaths due to COVID-19 and 321 confirmed cases, in Santa Clara County.