Former Mets and Phillies outfielder Lenny Dykstra was arrested for investigation of grand theft, a day after he was charged with a federal bankruptcy crime, authorities said Friday. Dykstra, 48, was arrested Thursday night by Los Angeles police at his Encino home on suspicion of trying to buy a stolen car, police spokesman Officer Christopher No said. Dykstra remained jailed Friday, according to the ESPN.com report.