Port St. Lucie police are looking for a missing 73-year-old man.

PORT ST. LUCY, Florida. Port St. Luce police issued a “purple alert” Tuesday night for the missing 73-year-old Ronald Corbin, choir director of Martin County High School for 34 years before retiring in 2014.

Corbin was last seen at noon at his 500 block home on Northwest Bayshore Boulevard, leaving in his gray 2017 Honda CRV with Florida license plate FFK-214 and never returning home, the police department said on Facebook. Press secretary John Dellacroce told WPTV they are actively looking for the man.

The Florida Purple Alert is used to assist in the search for missing adults with mental, cognitive, intellectual, or developmental disabilities.

Corbin has diabetes and had a kidney transplant.

His daughter Candace Corbin, who lives in New York, told WPTV that he was last seen by a physical therapist.

“I spoke to him at 12:15 and he spoke well,” she said.

In the afternoon, he was supposed to go to another doctor’s appointment, but he didn’t show up. According to her, his phone was disconnected from 13:30.

“It’s uncharacteristic and has health issues,” said his daughter, who donated one of her kidneys to him in 2018.

Candice studied music under her father and also sang in OPUS, which is an acronym for “Outstanding People United to Sing”.

Knowing that many of Corbin’s former students would want to help, Leah Ritland set up an online GoFundMe fundraiser to help cover her former teacher’s expenses.

“Mr. Corbin was not just a great teacher, he was a force in people’s lives,” she said in a TCPalm article.