Facebook appeared to be blocked for a period in Armenia Sunday, according to locals on Twitter.

Only one day after Twitter was throttled in Turkey during an ill-fated coup attempt, social media again seemed to become a target during unrest in Armenia's capital, Yerevan. Facebook has been approached for comment.

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The Armenian security service said that armed men had stormed a police headquarters in Yerevan Sunday and were holding hostages, Reuters reported. The group called for the release of Jirair Sefilian who was arrested in June. Sefilian is an opposition activist and critic of Armenian President Serzh Sargsyan.

The security service also accused "the hostage takers' supporters of spreading false rumours on the internet that an armed uprising against the government was underway," according to the outlet.

A spokesman for the group demanded the release of all "political prisoners," and called on Armenians to take to the streets to force the government to step down.

Early Sunday, journalists and others in Armenia used Twitter to suggest Facebook had been blocked for a period as the incident unfolded.

Problems with Facebook in Armenia after Yerevan Erebuni police station takeover and announcement of #coup attempt pic.twitter.com/GIZF0x6Xvm — Gegham Vardanyan (@reporterarm) July 17, 2016

#Armenia learning lessons well about blocking social media sites during unrest from its neighbors #Facebook NOT working — Maria Titizian (@MariaTitizian) July 17, 2016

#Facebook is almost not operating now in #Armenia, seems to be blocked, as coup continues — Armenak Minasyants (@ArmMinasyants) July 17, 2016

Others shared that Facebook was working fine, and later that the connection had since been restored.

I am on Ucom in Yerevan and I can access Facebook perfectly fine. This does not look like a coup.. — Arpiné Grigoryan (@arpik) July 17, 2016

Facebook connection was restored as users started using proxy servers to avoid blockade @MariaTitizian @Kornelij @mkdotam — Artur Papyan (@ditord) July 17, 2016

Photos and live video from the scene showed huddles of police near the station.

In front of the captured Police HQ right now. Security services still hold negotiations #Armenia #Breaking pic.twitter.com/nmNDUG7FIk — Artur Papyan (@ditord) July 17, 2016

Armenia shares its western border with Turkey. Once part of the former Soviet Union, the country became independent in 1991.

The Associated Press contributed reporting.

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