Serbian authorities have released from detention a senior Kosovo police official who was jailed on suspicion of terrorism over a month ago.

The state Serbian TV says that Nehat Thaci was released on Tuesday after prosecutors dropped the investigation against him.

Thaci was jailed after crossing from Kosovo into Serbia late in September, a sign of ongoing tensions in the volatile Balkans. Kosovo has protested the arrest.

The predominantly ethnic-Albanian former Serbian province declared independence in 2008 following a 1998-99 war. Belgrade has refused to recognize the split, but has joined EU-backed talks on normalizing ties to advance its own membership efforts.