OKLAHOMA CITY (AP) - Delaware County District Judge Robert Haney has approved the circulation of a grand jury petition seeking an investigation into campaign contributions received by state Rep. Doug Cox.

An order approving the petition drive was handed down July 11, two days day after it was filed by Timothy V. Beauchamp. The order did not mention Cox by name.

Beauchamp, in his petition, questioned whether Cox has received corporate donations and contributions exceeding the state limit.

Beauchamp is questioning three donations to the Cox campaign in 2006, the largest for $250.

Cox said he did not knowingly receive corporate money, but would give it back if he did.

I certainly do not want to do anything illegal, he said.

Cox, the Legislature's only doctor, said politics are behind Beauchamp's petition. Cox is running for re-election.