Actor Richard Belzer's older brother has died in an apparent suicide.

Leonard Belzer, 73, is believed to have jumped out of the window of his 15th floor New York City apartment on Wednesday (30Jul14), according to the New York Daily News.

Police are investigating the incident as a suicide as notes were reportedly left behind.

The former radio host was married to Sesame Street director Emily Squires until her death in 2012.

Law & Order: Special Victims Unit star Belzer has yet to comment on the tragic news.