Two civilians were killed and others were injured on Tuesday when a shell fired on Dar Saad district of Aden province in southern Yemen.
Local sources said that a mortar shell landed in al-Dhia district of Dar Saad district, killing two bystanders and wounding others.
The sources reported that clashes broke out early Tuesday morning between the sons of Dar Saad Directorate and the security belt forces of the Southern Transitional Council (STC) supported by the United Arab Emirates (UAE).
According to eyewitnesses gunmen from the Directorate deployed in a number of streets and attacked security points.
Eyewitnesses reported that the security forces exchanged gunfire with the gunmen.
On August 10, the Emirati-backed separatist STC's forces seized full control over the Yemeni southern port city of Aden, seat of the official government, following violent clashes with official army that left 40 people killed and 260 others injured, according to UN release seizure of Aden.
The Yemeni legitimate government dismissed the STC seizure as another coup in Aden, following the Houthi coup in Sana'a, holding the UAE and STC responsible for ramifications.
On the same day, the Saudi-led coalition called on the STC to pull back its forces from positions its forces seized last Saturday, and threatened to "use military force."
Riyadh called for immediate dialogue in the kingdom between Yemeni government and the STC.
While they quit some government civil offices, STC troops rejected withdrawal from military camps and security sites.
Southern separatists have exploited Yemen's war to enhance their presence in the south, backed by the UAE that helped the STC establishment in May 2017 to consist of bodies calling for separation, but also trained and armed local forces under STC command.
The STC claims to be representative for Yemeni southerners and seeks to impose control over all the south, but it is not fully supported by people there.