Yemen's Houthis fired missiles at the presidential palace complex in the southern city of Aden on Thursday, killing two security guards, two government officials told Reuters.
Yemen's prime minister and cabinet members who were at the Maashiq presidential palace complex were unharmed, Information Minister Moammar al-Eryani said, adding that the Houthis had fired five missiles at the complex.
The Houthi-run Saba news agency, citing a military official, said the group had targeted a military operations headquarters run by Saudi officers at the complex, as well as weapons depots. Reuters could not independently verify the claims.
The Iran-aligned group's military spokesperson, Yahya Saree, said the strike on what he described as a Saudi military operations headquarters in Aden was part of the group's declared policy of "targeting Saudi military build-ups wherever they are."
Three witnesses had earlier told Reuters they heard loud booms in the vicinity of the palace.
The Iran-backed group also recently warned airlines that Saudi airspace and airports remain unsafe.
Strikes on Saudi installations intensify
The Saudi-led military coalition in Yemen said that the country's Houthis had attempted to attack dozens of Saudi airports, ports and oil facilities, as fighting between the Iran-aligned group and Saudi Arabia intensified.
The Houthis have been firing ballistic missiles and drones at key Saudi sites for a week, in response to the kingdom's backing of government forces in Yemen's renewed civil war. The coalition's latest statement highlighted the risk to Saudi civilian infrastructure as the conflict escalated.
Coalition spokesperson Turki al-Maliki said at a press conference that the Houthis had launched 20 attacks on King Khalid International Airport in Riyadh this month, killing 17 people and wounding 333 others. The airport, one of Saudi Arabia's main international aviation hubs, was among the civilian infrastructure targeted in what the coalition described as a series of attacks.
The coalition also said Houthi attacks on Abha airport, in southwestern Saudi Arabia near the Yemeni border, had killed three people and wounded 28.
Maliki said the Houthis had acquired advanced military technology with the help of "regional actors," including ballistic missiles, drones and explosive-laden fast boats.
The spokesperson also said the coalition had destroyed 127 weapons storage facilities and launch platforms in Yemen's mountainous areas.
He called on the Houthis to immediately halt operations targeting civilians and civilian infrastructure, and said the group should read the coalition's statement carefully and "between the lines."
Shortly after the coalition's statement, the Houthi military spokesperson said Saudi airspace and airports were unsafe, renewing a warning to airlines while excluding airspace over the holy cities of Mecca and Medina.
Yemen has been mired in conflict since the Houthis seized the capital Sanaa in 2014, prompting a Saudi-led military intervention the following year. The UN-brokered truce in 2022 largely halted major fighting, and a de facto truce held even after it expired six months later. But efforts to turn it into a lasting political settlement have stalled as regional tensions have intensified.