Tennessee ? Associates of the late Teamsters boss Jimmy Hoffa plotted to ambush a group of FBI agents during his 1962 trial in Nashville, newly released transcripts of federal grand jury testimony indicate.

Walter J. Sheridan, a Justice Department official, told the Nashville grand jury in March 1963 that Hoffa’s supporters planned to trap the agents in an alley “and have a bunch of business agents waiting for them.”

The grand jury testimony came at a time when the Justice Department under then-Attorney General Robert F. Kennedy had targeted Hoffa for prosecution.

The plan was not carried out. The trial, on charges that Hoffa took payoffs from trucking companies, ended in a hung jury. But Hoffa was convicted two years later of jury tampering during the Nashville trial.