Yemen has called for an emergency meeting by the Security Council on escalating violence and crimes by Houthi militants in some cities including Aden.
The call coincided with continued efforts to reach a pause of fighting in Yemen so that aid can be delivered to the affected people.
The death toll from rocket attacks by Houthi militants on boats carrying displaced families and residences in Aden increased Wednesday to 86, medical sources said.
The attacks coincided with Houthi advances in key districts including Al-Tuwahi where the massacre took place.
Local sources said the militants with support from forces loyal to the former president seized Al-Tuwahi and advanced toward the Fateh district as well as key governmental compounds including the presidential palace.
Meanwhile, the popular resistance has called for intervention by ground troops from Saudi-led Arab countries that have been conducting airstrikes on the militants since March 26.
The same call was included in the letter sent to the Security Council by the government today.
Reports said the letter urged the council to take action through sending ground troops to protect civilians and stabilize Aden.
At a press conference in Riyadh, foreign minister Riyadh Yaseen said the militants fired rockets at residences and families fleeing violence in Aden.
"The escalation by the Houthi militia aims to undermine the efforts to hold talks between Yemeni factions on May 17," he told reporters.
President Abdu Rabbu Mansour Hadi called the talks to kick on May 17 in Saudi capital Riyadh under the sponsorship of the GCC states.
On Wednesday, the Houthi militants shelled the Saudi city of Najran on the border with Yemen for the second day killing one police officer and four civilians, Saudi media reported.
Around 11 others were injured in the attack which occurred a day after three Saudi citizens were killed in a similar rocket attack by Houthis on Najran.
Study and flights were suspended in the Saudi city after the Tuesday's attack.