The City of Yonkers mourned the loss of Detective William Sullivan, an active police officer who died Saturday from complications from the coronavirus.

Sullivan leaves behind his wife Eileen, daughter Jacqueline and his son Will, who's also in the police department.

Mayor Mike Spano was a close personal friend of Sullivan going back to their days in grade school.

The Yonkers mayor took to social media to write this heartfelt post about Sullivan.

"To all who prayed, and extended their heartfelt condolences, I thank you. It is difficult for me to say, Detective William Sullivan, Sully, has passed away," Spano wrote on Facebook. "Sully was a colleague, dear friend and family. One thing I have learned throughout my years is, blood is not what makes you family. Instead, the memories you share together do. God knows Sully and I had our share of memories – but I would do anything for just one more.

"I will miss you dearly, brother. I love you. Until we meet again," Spano said in his post.

Other police departments are sending their condolences to the Yonkers Police Department and Sullivan's family on social media as well.

The Westchester County Police PBA said on Facebook, "Great guy, great cop, great friend. Sully was the consummate professional, & the go-to guy for whatever you needed. We lost a true brother. Our heartfelt condolences to his family and his brothers and sisters in the YPD family. We will never forget Bill."

The Eastchester Police Department said on Facebook, "Tonight we send our condolences to the family, friends, and to our extended family at the @yonkers_police and @yonkers_pba as they mourn the loss of active member Detective William Sullivan who passed away from complications after being infected with CoVid-19. Rest In Peace Brother."

Twitter: @ChrisEberhart2