Yemeni snipers have shot and killed at least five Saudi soldiers in the kingdom’s border regions in retaliation for the Riyadh-led coalition’s deadly military campaign against the country.

Yemen’s Arabic-language al-Masirah television network reported that two of the Saudi troops were killed in al-Hamezah and Tabat al-Khazan villages of Jizan region on Monday night.

Two others were also were also killed in the al-Alab border crossing in Asir region, while another was shot dead at a military base in Najran region, the report said.

The development comes a day after Yemeni armed forces shot and killed eight Saudi soldiers in Jizan.

At least 13,600 people have been killed since the onset of Saudi Arabia’s military campaign against Yemen in 2015, which is meant to reinstall the country’s former Riyadh-friendly government and crush its popular Houthi Ansarullah movement.

Much of the Arabian Peninsula country’s infrastructure, including hospitals, schools and factories, has been reduced to rubble due to the war.

The Saudi-led war has also triggered a deadly cholera epidemic across Yemen and pushed the country to the verge of famine.

The Houthi movement, backed by allied forces, has been defending the country against the Saudi aggression.