The case against an American Airlines co-pilot accused of drunkenness at Detroit Metropolitan Airport has been delayed because the man is at a treatment center.

John Maguire is charged with operating under the influence of alcohol on March 26. The Wayne County prosecutor's office says a hearing scheduled for Wednesday has been adjourned until June 22 at the request of his lawyer.

Defense attorney Frank Manley tells WWJ-AM that Maguire is at a treatment center in California and they want to make sure any issues are handled properly.

The Associated Press left a message Wednesday for Manley.

The 50-year-old Maguire, from Chadds Ford, Pennsylvania, was removed from a Detroit-to-Philadelphia flight before takeoff at the airport in Romulus. Authorities say his blood-alcohol level was twice the legal limit.