New York City officials are investigating the deaths of three men quarantined at a hotel in New York City over the weekend.

The men were staying at the Hilton Garden Inn South in Times Square in rooms designated for patients recovering from COVID-19. It is not clear if their deaths were related to the virus.

"We are doing a review to what happened," de Blasio guaranteed Monday. "These are three people who were in hospitals for COIVD 19, got care, recovered and were released."

Two of the men died Saturday, a law enforcement source says, and the third passed away Sunday morning.

City officials confirm guests staying at the Hilton Garden Inn on 37th Street have been released from the hospital, deemed safe to recover on their own.

Telephone wellness checks are supposed to be conducted each day and if there is no answer staff are sent to check on them. The family of one of the men says they could barely contact the man, and that no medical professional were on-hand at the hotel.

"We absolutely are going to check on people more deeply in that facility," de Blasio added. "We're confused as to how this could have happened."

Mayor Bill de Blasio on Thursday talked about the ramping up of 11,000 "more hotel rooms to use for quarantining those who live in overcrowded, multigenerational households."