four students from wesleyan university in connecticut are arrested in connection with an overdose involving the party drug mali. 11 people were hospitalized after taking an apparent bad batch of the drug at a weekend party. police say there may have been a mix of so-called designer drugs in that batch of mali. the four students arrested have all been suspended from school. charges of felony hit-and-run against a driver who abandoned his pickup truck in oxnard california on railroad tracks that led to a collision with a metrolink commuter train. that train ran into that vehicle. 594-year-old driver is in custody. police found him a mile and a half from the scene. at least 30 people were injured in that crash. four still in critical condition. it appears new train technology may have been prevented a tragedy. officials say some of the metrolink cars were equipped with technology five years ago following a deadly rail crash. chicago mayor rahm emanuel now faces an april runoff in his bid for re-election.