Detectives investigating a vehicle hijacking and security alert in the Waterside area of Londonderry last month have arrested a 28-year-old man.
The man was arrested in the Claudy area on Sunday.
A viable device was left in a hijacked vehicle outside Waterside police station in the city on the evening of Sunday November 20.
It sparked a major security alert which led to some children not being able to get to school the next day.
Detectives previously said they were investigating a claim that the dissident republican group Arm na Poblachta was responsible.
A PSNI spokesman said the man was arrested under the Terrorism Act and taken to Musgrave Police Station for questioning.
The spokesman said he was being questioned on suspicion of kidnapping and possession of a firearm in connection with a separate incident that is believed to have taken place in Claudy on November 10.
It is understood a man was threatened with a firearm and taken from premises on Main Street in the village by two masked men.
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