HARRISBURG — State Rep. Bill DeWeese’s legal team is mounting a wide-ranging challenge to his prosecution on government corruption charges.

An omnibus motion filed Thursday in Dauphin County court in Harrisburg alleges the state attorney general’s office charged DeWeese without establishing probable cause and misrepresented the facts at his preliminary hearing.

It also challenges the state conflict-of-interest law as unconstitutionally vague and asks for a second time that DeWeese’s trial be moved to another county.

The Greene County lawmaker, a senior member of the House Democratic caucus, is charged with conflict of interest, conspiracy and three counts of theft for allegedly misusing his public office for campaign purposes.

The attorney general’s office declined to comment on the filing Thursday.

The charges against DeWeese stem from a broader investigation into the use of taxpayer resources for electioneering in the Legislature. It was launched in early 2007 by then-Attorney General Tom Corbett, a Republican who was elected governor in November.

Twenty-five current and former legislators and aides from both parties have been charged so far. Seven defendants pleaded guilty, three were convicted, two were acquitted and the other 13 are awaiting trial.