Azerbaijani police detain three opposition party leaders and more than 100 activists for attempting to protest the results of last week's parliamentary election.
Iran reports that it shot down an unidentified armed drone, which then crashed inside its Ardabil Province on the northern border with Azerbaijan. According to Iranian media, the drone probably was launched by Azerbaijan's military, then erroneously entered Iranian airspace.
Azerbaijan holds a snap election after President Ilham Aliyev dissolved the National Assembly last December. The opposition accuses Aliyev of limiting their ability to campaign, and calls for boycotts against the election.
Four alleged extremists planning terror attacks in Azerbaijan are killed in a shootout with the country's security forces; one suspect is arrested. The State Security Service says the group was connected to an unspecified religious extremist group abroad.
Azerbaijani National Police use tear gas and water cannons to forcibly disperse protesters in the Quba District who were protesting the country's worsening economic situation, resulting in scores being arrested.
Five more Azeri troops are killed in overnight fighting with ethnic Armenians in Nagorno-Karabakh. The casualties bring the death toll to at least 13 in a flare-up of violence over the last few days around Nagorno-Karabakh. Russia has said that any further escalation is unacceptable.