Norway’s populist party has quit the country’s governing coalition over a decision to allow a suspected “Isis bride” to return from Syria.

Finance minister Siv Jensen said there had been “too many compromises” as she announced her right-wing Progress Party would step down.

The move means Conservative prime minister Erna Solberg no longer has a parliamentary majority, which could make the country more difficult to govern.

However she is expected to remain in office as head of a minority coalition.

Ms Jensen’s departure was triggered by the decision to help a Norwegian woman and her two children return from Syria so one of the youngsters could receive medical treatment.

The woman, who left Norway in 2013, was arrested on her return on suspicion of being a member of the Isis terrorist group.

Timeline of the Isis caliphate Show all 19 1 /19 Timeline of the Isis caliphate Timeline of the Isis caliphate ISIS began as a group by the merging of extremist organisations ISI and al-Nusra in 2013. Following clashes, Syrian rebels captured the ISIS headquarters in Aleppo in January 2014 (pictured) AFP/Getty Timeline of the Isis caliphate Abu Bakr Al-Baghdadi declared the creation of a caliphate in Mosul on 27 June 2014 Timeline of the Isis caliphate Isis conquered the Kurdish towns of Sinjar and Zumar in August 2014, forcing thousands of civilians to flee their homes. Pictured are a group of Yazidi Kurds who have fled Rex Timeline of the Isis caliphate On September 2 2014 Isis released a video depicting the beheading of US journalist Steven Sotloff. On September 13 they released another video showing the execution of British aid worker David Haines Timeline of the Isis caliphate The US launched its first airstrikes against Isis in Syria on 23 September 2014. Here Lt Gen William C Mayville Jnr speaks about the bombing campaign in the wake of the first strikes Getty Timeline of the Isis caliphate Isis militants sit atop a hill planted with their flag in the Syrian town of Kobani on 6 October 2014. They had been advancing on Kobani since mid-September and by now was in control of the city’s entrance and exit points AFP/Getty Timeline of the Isis caliphate Residents of the border village of Alizar keep guard day and night as they wait in fear of mortar fire from Isis who have occupied the nearby city of Kobani Getty Timeline of the Isis caliphate Smoke rises following a US airstrike on Kobani, 28 October 2014 AFP/Getty Timeline of the Isis caliphate YPG fighters raise a flag as they reclaim Kobani on 26 January 2015 VOA Timeline of the Isis caliphate Isis seized the ancient Syrian city of Palmyra on 20 May 2015. This image show the city from above days after its capture by Isis Getty Timeline of the Isis caliphate Kurdish forces are stationed on a hill above the town of Sinjar as smoke rises following US airstrikes on 12 November 2015 AFP/Getty Timeline of the Isis caliphate Kurdish forces enter Sinjar after seizing it from Isis control on 13 November 2015 AFP/Getty Timeline of the Isis caliphate Iraqi government forces make the victory sign as they retake the city of Fallujah from ISIS on 26 June 2016 Getty Timeline of the Isis caliphate Iraqi forces battle with Isis for the city of Mosul on 30 June 2017 AFP/Getty Timeline of the Isis caliphate Members of the Iraqi federal police raise flags in Mosul on 8 July 2017. On the following day, Iraqi prime minister Haider Al Abadi declares victory over Isis in Mosul Getty Timeline of the Isis caliphate Members of Syrian Democratic Forces celebrate in Al-Naim square after taking back the city of Raqqa from Isis. US-backed Syrian forces declare victory over Isis in Raqqa on 20 October 2017 after a four-month long campaign Getty Timeline of the Isis caliphate Female fighters of the Syrian Democratic Forces celebrate in Al-Naim Square after taking back the city of Raqqa from Isis. US-backed Syrian forces declare victory over Isis in Raqqa on 20 October 2017 after a four-month long campaign AFP/Getty Timeline of the Isis caliphate Trucks full of women and children arrive from the last Isis-held areas in Deir ez-Zor, Syria in January 2019 They were among the last civilians to be living in the ISIS caliphate, by this time reduced to just two small villages in Syria’s Deir ez-Zor Richard Hall/The Independent Timeline of the Isis caliphate Zikia Ibrahim, 28, with her two-year-old son and 8-month-old daughter, after fleeing the Isis caliphate, on Saturday 26 January 2019 Richard Hall/The Independent

While Progress had offered to help the children, the populist party sought to deny any government assistance for adults seeking to return home after joining Islamist groups abroad or marrying foreign fighters.

Decisions on whether to help women with IS ties return from Syria has caused controversy in Europe, including in Finland where the recently appointed government settled on a compromise to decide each case individually.

The Norwegian woman, who has not been named, has denied the charges against her and will fully cooperate with police during interrogation, her lawyer has said.

Ms Jensen’s exit, along with six other Progress cabinet ministers, leaves Solberg with a string of posts to fill, including that of oil and energy minister to oversee Western Europe’s biggest oil and gas industry.

Norway’s constitution does not allow early elections, and the next vote for parliament will not take place until September 2021.

All four parties in Ms Solberg’s coalition currently struggle in the polls, including Progress which is stuck at about 10 per cent support, down from more than 20 per cent a decade ago.

Ms Jensen recently admitted the government looked “grey and dull”, with the party’s image diluted by compromises with centrist parties that do not share its penchant for tax cuts and less immigration.