TEHRANinfo-icon:- President Hassan Rouhani warns the UKinfo-icon about the "consequences" of its recent seizure of an Iranian supertanker.

"I remind [this] to the Britons," Rouhani cautioned on Wednesday, "You are the ones initiating insecurity, and will come to realize its consequences in the future."

Rouhani, who was addressing a government meeting in Tehran, called the action "very juvenile, heinous, and wrongful" and "to their [Britaininfo-icon's] detriment," noting that all international efforts should instead be focused on ensuring maritime security.

Oilinfo-icon tanker Grace 1 was stormed by British marines and Gibraltar port agenciesinfo-icon last week as it was believed to have been carrying oil to Syriainfo-icon in possible violation of European Unioninfo-icon sanctions against the Arab country.

Iraninfo-icon condemned the illegal seizure as "maritime piracy" and summoned the British ambassador on three occasions to convey its protest at the confiscation.

Iran's defense chief slams as an act of "piracy" Britain's move to seize an Iranian oil tanker in the Strait of Gibraltar.

Rouhani further said the British forces took the move "on someone else's behalf," referring to various accounts, including a statement by Spaininfo-icon's Foreign Ministry, which have revealed that the UK carried out the confiscation at the United Statesinfo-icon' behest.

He also noted that the UK seized the vessel inside a territory, which itself has seized from Spain, adding that the people of Spain had deplored the move, too.

Rouhani also referred to a USinfo-icon drone violation of Iranian airspace last month, saying the incursion was "of course met with a decisive response." The drone was downed by the Islamic Revolutioninfo-icon Guards Corps (IRGC).

Iran's Islamic Revolution Guards Corps shoots down an intruding American spy drone in the country's southern coastal province of Hormozgan.