A group of Brigadier Henry Tumukunde supporters were Wednesday morning intercepted at Nsangi in Wakiso along Masaka Road as they headed to Kampala to attend the hearing of his case at the Court martial at Makindye.
The over 100 supporters were held for several hours at the police station but were later freed.
"We were only going to sit in court and listen. It's so unfair that the police cannot let us go," said Beatrice Rutalemwa, a former councilor of Nyakishenyi and the leader of the group.
Police however clarified that the buses had been intercepted due to Tumukunde's case. Police said they had received information that some wrong elements were on the buses.
Meanwhile Tumukunde's lawyers have asked court to acquit him.
He faces charges of spreading harmful propaganda and conduct prejudicial to good order and discipline.
He is alleged to have committed the offence during a radio program when he appeared on a local FM station talk show in Kampala in 2005.