OKLAHOMA CITY (AP) _ An author pleaded guilty to sending his book about Oklahoma City bombing conspiracy theories to a member of a grand jury that investigated the blast and received a suspended sentence and community service on Friday.

David Hoffman, 38, pleaded guilty to two misdemeanor counts of tampering with the grand jury, but maintained he was trying to show the jury the truth.

``They've sentenced me to community service, but I think I've done the greatest community service a person could do,'' Hoffman said. ``I was trying to influence the jury to the truth.''

Hoffman avoided jail time, receiving a one-year suspended sentence on each count and one year of probation. He must also serve 200 hours of community service.

Hoffman, author of ``The Oklahoma City Bombing and The Politics of Terror,'' is accused of sending a copy of his book and a note to an alternate member of the grand jury in September.

The grand jury met for 18 months. In its final report, it dismissed theories that alleged a larger conspiracy and a government coverup, including theories mentioned in Hoffman's book.