A Turkish national was detained on Saturday after he reached here from Sri Lanka in a fiberglass boat.
The foreigner, identified as Mahir Devrim, 43, was apprehended at about 8:30 pm on Saturday.
He was detained for questioning by Ramanathapuram police at Serankottai seashore when the former was found to be moving suspiciously near the port office.
A case has been registered and an investigation has been initiated in the matter.
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