At least 14 people have been killed in two separate mass shootings in the United States within hours of each other, according to local authorities.

Five people were shot dead at a home in Douglas, Georgia, on Friday evening, police said.

In a separate incident in Erie, Pennsylvania, nine people were killed, including two children and a pregnant woman. Authorities confirmed that the suspected assailant was also among the dead.

Erie Police Chief Rick Lorah described the scene as one of the most devastating incidents of his career, saying the motive for the shooting had not yet been established.

Pennsylvania Governor Josh Shapiro expressed his support for the affected community, describing the incident as a tragic loss of life.

Authorities are continuing to investigate the circumstances surrounding both shootings.

The third attack this week on Riyadh’s international airport on Saturday left at least 12 people dead and ​more than 300 wounded, Saudi authorities said, as Iran-backed Houthis escalated the campaign they launched this summer against the kingdom, Reuters reported.

The dead included four Saudis, two ‌people from Bangladesh and one person each from the US, Jordan, Palestine, Syria, Sudan and Egypt, the Saudi civil aviation authority said. At the latest count, officials said, 309 were wounded.

Hospitals were flooded with wounded brought by ambulance and helicopter, people briefed on the matter said. Some were in critical condition.

Saturday’s attack, the deadliest in the kingdom in more than a decade, occurred without warning, with no alert issued by Saudi ​Arabia’s threat warning system. This week’s two previous attacks on King Khalid International Airport left four people dead and caused heavy damage to a Saudi commercial plane ​parked on the tarmac.

The deadly strikes exposed vulnerabilities in the kingdom’s defence capabilities as it wages an air campaign against the Houthis to ⁠support a ground war by the Yemeni government against the Iran-backed group.

Hospitals were flooded with wounded brought by ambulance and helicopter, people briefed on the matter said. Some were in critical condition.

Saturday’s attack, the deadliest in the kingdom in more than a decade, occurred without warning, with no alert issued by Saudi ​Arabia’s threat warning system. This week’s two previous attacks on King Khalid International Airport left four people dead and caused heavy damage to a Saudi commercial plane ​parked on the tarmac.

The deadly strikes exposed vulnerabilities in the kingdom’s defence capabilities as it wages an air campaign against the Houthis to ⁠support a ground war by the Yemeni government against the Iran-backed group.

US President Donald Trump, speaking to reporters outside the White House, was asked whether Washington planned to join Saudi strikes on the Houthis, read the report.

“We may. ​We’re going to look at it. We just found out about the recent attack, so we’ll make a decision. We move very quickly,” he said.

US Secretary of State Marco Rubio condemned the attacks, saying ‌they “demonstrate a ⁠blatant disregard for innocent civilian life.”

One eyewitness at the airport on Saturday reported seeing an explosion and then multiple people lying injured on the ground inside. More than a dozen ambulances were seen rushing towards the facility. A video verified by Reuters showed ambulances at the airport.

An injured traveller told Reuters they saw something fly across the sky outside the airport before part of the ceiling near a departure gate collapsed.

The US embassy in Riyadh said it was “aware of attacks” and “strongly recommends all US citizens avoid this ​airport and surrounding areas.”

Saudi Arabia entered the Yemen ​war in 2015 at the head ⁠of an Arab coalition to try to force the Houthis out of the Yemeni capital Sanaa. The Houthis had stormed Sanaa the previous year, pushing out government forces, Reuters reported.

The war was fought to a bloody stalemate, with hundreds of thousands of Yemenis killed by fighting and famine. ​Saudi Arabia struck a 2022 deal with the Houthis, freezing the conflict.

That ceasefire unravelled over the summer, culminating in a lightning Houthi ​advance that took the ⁠Red Sea chokepoint of Bab el-Mandeb from Saudi-backed government forces.

The Saudi-backed Yemeni government began an offensive this week to try to retake that territory, which has so far made slow gains, even as the Houthis put the country’s third-largest city, Taiz, under siege.

Flight-tracking site flightradar24 showed all flights to Riyadh had either been diverted or cancelled, with only a ⁠helicopter hovering over ​the airport at one point.

Houthi attacks on Thursday and earlier in the week had already prompted a number ​of carriers to suspend or cancel services to the Saudi capital, shortly before Riyadh is due to host major energy and investment conferences.

Organizers of those conferences said ahead of the strikes on Saturday they would go ahead as ​planned.

Mohammad Younus Akhundzada, the Islamic Emirate’s Minister of Energy and Water, departed for Riyadh, the capital of Saudi Arabia, on Saturday to attend the 17th World Energy Forum.