WILTON - Police are still trying to determine the cause of a crash that killed a Wilton man Sunday.

Police say Nick Zinicola, 29, was driving on Route 25 when his car veered off the road and into a rock wall around 2 p.m.

They believe Zinicola was speeding, and he was not wearing his seat belt.

Police are asking anyone who witnessed the crash to give them a call at 203-696-2500.