Alabama Gov. Bob Riley has signed an executive order limiting attorney fees in lawsuits the attorney general has filed over the massive oil spill in the Gulf of Mexico, a decision that reignites a political feud between the two politicians.

Riley signed the order Thursday, shortly before Attorney General Troy King sued British oil company BP PLC and three other companies involved in an April 20 explosion aboard the Deepwater Horizon drilling rig. The accident triggered the nation’s worst offshore oil spill, closed fisheries and sent oil washing onto Alabama’s coastline.