FORT PIERCE — Deputies are on scene investigating a multi-vehicle crash on northbound Interstate 95 north of Fort Pierce. The right lane was closed and injuries were reported. All lanes are now open.Twitter follower @rhith (a.k.a. Ian Sitko) said that there looked to be two or three vehicles involved when he drove by the scene around 1:30 p.m. Thursday.According to the Florida Highway Patrol, the crash occurred at 12:40 p.m.Sitko said that he was stuck in traffic for about half an hour due to the wreck.