Alexa Lynn Laffkas admitted to a fatal hit-and-run accident that killed a man last Memorial Day weekend in Norristown. The 22-year-old from Uwchlan Township was sentenced in Montgomery County Court Monday to three to six years in state prison. The deceased man was identified as 64-year-old Clinton Rucker. Laffkas, who will surrender to state prison officials May 17, told the Judge that she knew or should have known that she struck Rucker but she failed to stop. Other charges against Laffkas were dismissed in exchange for her guilty plea to the most serious charge of a felony charge of accidents involving death.