A wave of internet outages was imposed in Iran Wednesday, ILNA news agency reported, a day before commemorations called for on social media for those killed in unrest last month.

The cut came on the orders of security bodies, the news agency said, citing what it called an informed source at Iran's information and communications technology ministry.

"This restriction on internet access solely includes international traffic of mobile phone lines," the source was quoted as saying.

It also excluded what the source called "internal traffic", indicating only domestic websites would be accessible.

ILNA said international connections would be limited in the provinces of Alborz, Fars, Kordestan and Zanjan, and that this was likely to be increased to include others.

A later update by the labour-focused news agency excluded information from its original report, including that the outage had been ordered by security bodies and the province names.

AFP correspondents in Tehran reported disruptions on Wednesday to internet connections and other related services.

NetBlocks, a website that monitors international internet outages, also reported the disruptions, tweeting that there had been "evidence of mobile internet disruption in parts of #Iran" since 6:30 am (0300 GMT).

NetBlocks, a website that monitors international internet outages, also reported the disruptions, tweeting that there had been "evidence of mobile internet disruption in parts of #Iran"
NetBlocks, a website that monitors international internet outages, also reported the disruptions, tweeting that there had been "evidence of mobile internet disruption in parts of #Iran" AFP / ATTA KENARE

"Real-time network data show two distinct drops in connectivity this morning amid reports of regional outages; incident ongoing."

The outages come ahead of planned commemorations for people killed in street violence that erupted last month during demonstrations against fuel price hikes.

At the time, authorities imposed a week-long internet blackout as police stations were attacked, shops looted and banks and petrol stations torched.

Officials in Iran have yet to issue an overall death toll for the unrest, but human rights group Amnesty International has put the number at more than 300.

Among them was Pouya Bakhtiari, a 27-year-old who reportedly died in Karaj, the capital of Alborz province.

Mehr news agency reported on Tuesday that his family were arrested after they were found to have been "carrying out a counter-revolutionary project".

Bakhtiari's Instagram account, reportedly run by his family, had announced a ceremony marking 40 days since his death would be held at Karaj cemetery on Thursday.

The Instagram account was still active with more than 19,000 followers on Wednesday.