Tighter security in Saudi Arabia has made it hard for Islamic State to target the government so the militants are instead trying to incite a sectarian conflict via attacks on the Shi’ite Muslim minority, the Saudi Interior Ministry said.

Last week the Sunni group’s leader Abu Bakr al-Baghdadi called for attacks against the Sunni rulers of Saudi Arabia, which has declared Islamic State a terrorist organization, joined international air strikes against it, and mobilized top clergy to denounce it.

He spoke after an attack on Shi’ite civilians, the first since 2006 by militant Saudis based inside the kingdom. […]