The latest developments after Saudi Arabia severs diplomatic ties with Tehran amid a dispute over Riyadh's execution of an opposition Shiite cleric and attacks on Saudi diplomatic posts in Iran. (All times local.)

10:40 a.m.

Switzerland's Foreign Ministry has said that it summoned the Saudi charge d'affaires to reiterate its opposition to the death penalty in all circumstances after a mass execution in the kingdom.

The Swiss ministry, in a statement dated on Monday, said that "these mass executions risk reviving the confessional tensions which have already caused far too many victims in this region of the world."

It stressed the importance of doing everything to lower those tensions and "avoid provocations."

The Swiss move comes after Saudi Arabia on Saturday executed Shiite cleric Nimr al-Nimr and 46 others. Saudi Arabia cut diplomatic relations with Iran late on Sunday, hours after protesters stormed and set fire to the Saudi Embassy in Tehran in protest of the execution.