Yorktown Town Supervisor Tom Diana has died. A town spokesman says Diana had an apparent heart attack at his residence this morning and was pronounced dead at New York Presbyterian-Hudson Valley Hospital in Cortlandt Manor. His death comes four days after he was sworn in to his first full term. On Tuesday, he presided over the first Town Board meeting of the new year. Diana became supervisor after Matt Slater was elected to the state Assembly. Deputy Supervisor Ed Lachterman released the following statement:

"With deep sorrow and a profound sense of loss for his wife Donna, his family and friends, and the entire Town of Yorktown, we regret to inform you of the tragic news that Yorktown Town Supervisor Tom Diana passed away this morning. Tom was an incredible friend to so many. He was filled with energy, an open mind and heart, and a sense of duty and that influenced everything he did. We will communicate with Yorktown residents as more details become available while we process this tragic moment for our community."

News 12 received word Friday afternoon that Lachterman will serve as acting supervisor until the town chooses a succession plan within the next 30 days.

Diana's public service began with his election to the Town Board in 2015.

Diana, a retired Westchester County police officer and a proprietor of a small business, hailed from a lineage rooted in Shrub Oak as a third generation "Okie."

A wake will be held 2 p.m. - 9 p.m. Monday at Yorktown Funeral Home. His funeral is set for 11:15 a.m. Tuesday at St. Elizabeth Ann Seton Church in Shrub Oak.

He leaves behind his wife Donna, children and grandchildren.