05/19/2010 02:47 pm ET | Updated May 25, 2011

BP Oil Spill: Groups Demand The Government Take Control Over The Spill Clean-Up

NEW ORLEANS (AP) -- Environmental groups are asking the federal government to take over all monitoring and testing related to the Gulf of Mexico oil spill.

Oil has been spewing since an offshore drilling rig leased by oil giant BP PLC exploded off the coast of Louisiana April 20 and sank two days later.

In remarks prepared for congressional testimony, National Wildlife Federation President Larry Schweiger says too much information is in the hands of BP's many lawyers and too little is being disclosed to the public.

His group and nine others asked President Barack Obama on Wednesday to order more direct federal oversight. They want the government to release the results of all tests conducted so far.

BP did not immediately answer a call and e-mail requesting comment.