Moldova briefly closed its air space on Tuesday to investigate reports of a balloon-like object in the sky, a day after the small east European country accused Russia of plotting to bring down its government.

Authorities on Tuesday said they have “no idea why” a 43-year-old gunman killed three Michigan State University students and wounded five in the latest U.S. mass shooting, but said he had a history of mental health problems before the shooting spree that ended with him turning the gun on himself.

Russian forces bombarded front-line Ukrainian troops and towns in the eastern Donetsk region on Tuesday in what appeared to be early salvoes of a new offensive, as Western allies met to weigh sending more arms to Kyiv for an expected counter-attack.

Russia rejected an accusation by Moldova’s president that Moscow is plotting to destabilise the former Soviet republic.

Australia’s iron ore giants BHP Group, Rio Tinto and Fortescue are set to report a steep drop in their earnings, which is set to compress their payouts to shareholders after China’s COVID lockdown drove down iron ore prices.

Shots were fired at Michigan State University in East Lansing on Monday, with “multiple reported injuries,” university police said on Twitter, urging people on campus and nearby to “shelter in place,” as video from local media showed officers swarming the scene.

The U.S. military said on Monday it had recovered critical electronics from the suspected Chinese spy balloon downed by a U.S. fighter jet off South Carolina’s coast on Feb. 4, including key sensors presumably used for intelligence gathering.

Rescuers in Turkey pulled several people alive from collapsed buildings on Monday, a week after the country’s worst earthquake in modern history, but hopes of many more survivors were fading and criticism of the authorities grew.

The United States said on Monday it still did not know the origin or purpose of three aerial objects that its military shot down over the weekend, as Washington and Beijing traded accusations about high-altitude balloons.

Canadian Prime Minister Justin Trudeau said on Monday that the four aerial objects shot down in recent days, including one over Yukon territory on Saturday, are connected in some way, without elaborating.

A Georgia judge on Monday ordered the release of parts of a special grand jury’s report on efforts by former President Donald Trump and his allies to overturn the 2020 presidential election, but said that most of the report will remain under wraps for now.

A baby girl born under the rubble of her family’s home in northern Syria after last week’s devastating earthquake was in good health Monday and being breastfed by the wife of the director of the hospital where she is being cared for, her doctor said.