Bahrain has deported an Iranian diplomat over his alleged ties to a Kuwaiti spy cell.
Bahrain's state news agency BNA reported on Tuesday that the kingdom had declared the second secretary in the Iranian embassy persona non grata and ordered him to leave within 72 hours.
It named the official as Hujatullah Rahmani and conveyed Iran's charge d'affaires in Bahrain was summoned on Monday to the foreign ministry to be told about the expulsion order.
Iran said it reserves the right of a "reciprocal reaction" to the expulsion.
"The action taken by the Bahrain foreign ministry aims to divert attention and neglect the realities... these kinds of baseless accusations are contrary to good neighbourly relations... and are in line with the divisive intention of foreigners," Ramin Mehmanparast, a foreign ministry spokesman, was quoted as saying on the state television's website on Tuesday.