STONY BROOK - A woman who was struck by a hit-and-run driver in Stony Brook is in serious condition, authorities say.

Investigators say a 20-year-old woman was run down on North Country and Hawkins roads just before 5 p.m. Saturday.

No arrests have been made.

Anyone with information about the incident is urged to call Crime Stoppers at 1-800-220-TIPS.