Wedding-turned-funeral: Yemen's Houthis kill mother of bride shopping for wedding dress
The mother and her young son, identified as Bashir Taha Al-Jaafari, were both killed in the attack, which saw gunmen open fire on a bus near the Al-Ma'ain area in western Ibb, witnesses said, according to Almasdar Online.
Al-Jaafari's sister was unharmed in the attack, sources said.
It is unclear whether the mother and son were the intended targets of the attack, though the rebel group has been accused of war crimes, some of which include unexplained assault on women in the country.
In April, at least five women and a child were killed after Houthi rebels launched an attack on a prison in Yemen's third largest Taiz city.
The child was reportedly visiting the prison at the time of the attack.
Graphic images that surfaced online showed the dead bodies sprawled across the floor at the facility.
Yemen's devastating five-year war has introduced air strikes, death and poverty to a nation that was already listed as one of the most impoverished in the world.
Read also: Saudi Arabia intensifies bombardment ahead as it prepares to co-host Yemen aid conference
More than 100,000 people have been killed since the Saudi-led coalition intervened to back the government in March 2015, prompting the UN to label the situation in the country as the world’s worst humanitarian crisis.
Yemen is currently facing a catastrophic outbreak of the novel coronavirus, which has particularly hit the southern coastal city of Aden as well as the Houthi-run capital Sanaa.
The warning comes a day after a UN appeal for countries to fund emergency aid in the Arab world's poorest nation fell a billion dollars short of what aid agencies needed - $2.41 billion - to cover essential activities from June to December.