An illustrative image of Saudi and Iranian Flags.
"Saudi Arabia's ambassador to Tehran was summoned," the ministry said in a statement, adding that Tehran conveyed its "strong protest" against Riyadh's action, which it described as "unacceptable" and a violation of "the rules and norms of international law".
On Wednesday, the Saudi interior ministry announced that it has put six Iranians to death for drug trafficking.
The six were executed in Dammam, on the Gulf coast, for having "clandestinely introduced hashish" into the kingdom, the ministry said in a statement carried by the official SPA news agency without specifying when.
In 2023, the authorities launched a highly publicised anti-drugs campaign involving a series of raids and arrests.
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