MADISON, Wis. — Authorities say an 80-year-old man has died while sailing on Lake Monona in the Madison area.

Dane County sheriff's authorities say the man's family reported him missing after he was overdue Saturday. He was supposed to meet his family on the shores of Lake Monona after launching his sailboat but did not show up.

The missing sailboat later was spotted off-shore in Monona, and the man was found unresponsive nearby in the water. First responders tried to revive him, and he was taken to a hospital where he was pronounced dead.

The name of the man was not immediately released. Authorities say his death remains under investigation but does not appear suspicious.