Detectives investigating a number of incidents at the funeral of Peggy O’Hara in July have arrested two men in Strabane.
The two men were arrested in connection with dissident republican activity.
The suspects, aged 53 and 34, were arrested in the town on Tuesday morning by detectives from Serious Crime Branch.
The men have been taken into custody at Musgrave police station in Belfast for questioning.
Detectives are also carrying out a number of searches in Strabane.
Peggy O’Hara was a revered republican and her son, Patsy O’Hara, was one of 10 hunger strikers who died in Long Kesh in 1981.