Three Saudis have reportedly been arrested in connection to the suicide bombing on a mosque in Kuwait last month that killed 27, according to reports.

One of the three men, who are thought to be brothers, was arrested in Kuwait while the two others were arrested in Saudi – one in the southwestern city of Taif and another taken into custody after a shootout near the Kuwait border, Reuters reported early on Tuesday.

The trio were "parties to the crime of the sinful terrorist bombing that targeted the Imam al-Sadeq mosque in Kuwait," Saudi news agency SPA quoted a Saudi interior ministry spokesperson as saying.

The spokesman also said that two of the brothers were born in Kuwait and a fourth brother who lives in Syria is a member of Islamic State.

The suicide attack, the first bombing of a mosque in the oil-rich Gulf state, was claimed by the Saudi branch of the Islamic State (IS) group which calls itself Najd Province. The group said a Saudi carried out the attack.

The group has also claimed two suicide bombings in late may on Shia mosques in eastern Saudi Arabia.

Last Friday, Gulf interior ministers held an emergency meeting in Kuwait, calling for coordination to confront what was called a "serious epidemic".