TERRE HAUTE, Ind. (AP) — The warden of the federal prison where Timothy McVeigh is scheduled to be put to death in May warned county officials to brace for a media "city" outside the prison.

Warden Harley Lappin of the U.S. Penitentiary in Terre Haute says 1,300 media representatives have told the Bureau of Prisons they plan to cover the May 16 execution of the convicted Oklahoma City bomber.

The media intend to erect portable buildings, trailers and staging platforms outside of the prison, raising public safety issues, he told the Vigo County Safety Commission on Friday.

"It's shocking to me what they want to do. They want to build a city out there," Lappin said.

McVeigh was convicted of murder and other charges in the April 19, 1995, bombing of the Alfred P. Murrah Federal Building. The blast killed 168 people and injured more than 500 in the deadliest act of terrorism ever on U.S. soil.

McVeigh is scheduled to die by injection after waiving all court appeals in his case earlier this year. The time of the execution has not yet been decided.

Lappin said prison officials don't know how many protesters will gather for the execution. But all of the protesters will have to park their cars away from the prison site and be bused there, passing through metal detectors before reaching prison property.

The Bureau of Prisons has not yet decided whether it will allow hundreds of survivors and family members of victims of the bombing to watch the execution via closed circuit television, as about 250 family members or victims have requested.