A Pennsylvania Turnpike Commissioner has resigned his post in the wake of a corruption investigation by the state attorney general's office.
J. William Lincoln had served on the five-member panel for more than eight years and had been commission secretary-treasurer since March 2011. His resignation is effective immediately.
In a letter notifying Governor Tom Corbett of his decision, Lincoln said he was no longer able to perform his duties "given the additional personal stress over the events of the past two weeks and my already difficult battle with maintaining my health."
Corbett has accepted Lincoln's resignation.
Prior to serving on the Turnpike Commission, Lincoln was a state senator for 16 years and served as Senate majority leader during his final term. He also served as a state representative for six years before he was elected to the Senate.
The attorney general's office last week announced charges against former Senate leader Robert Mellow and three former Turnpike officials in a "pay to play" case involving the toll highway system.
Charges were also filed against former Turnpike commissioner Mitchell Rubin, former Turnpike CEO Joseph Brimmeier, former Turnpike COO George Hatalowich, two former Turnpike employees, and two Turnpike vendors.
The allegations include bribery, bid-rigging, theft and conflict of interest.