State police seized more than $5 million in cash Thursday from a tractor-trailer truck found idling on a road shoulder and arrested the driver on a money laundering charge. Detectives with the department's safe freight unit placed the truck under surveillance after troopers noticed it had been idling unattended for two days, Attorney General Peter Harvey said. ``The cash is the proceeds of illegal conduct, possibly narcotics activity, but that still remains under investigation,'' Harvey said. Investigators have not yet determined the exact source of the money, he said. Salvadore Delarosa, 46, of San Bernardino, Calif., was seen near the...