World News: Seven killed after bridge collapses in Russia's Bryansk region bordering Ukraine

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In Russia, two bridges in regions bordering Ukraine collapsed over the weekend, killing at least seven people and injuring dozens. Russian state media reported that the incidents are being investigated as potential "acts of terrorism."

On Saturday night, a bridge in Russia's Bryansk region collapsed onto a moving passenger train carrying over 300 people.

Seven people were killed and more than 70 others were injured in the disaster.

Hours later, early on Sunday, a second bridge collapsed in the neighboring Kursk region, derailing a cargo train and injuring the driver.

Both the Bryansk and Kursk regions border Ukraine and have seen a surge in attacks on infrastructure since Russia's invasion of Ukraine.

Moscow's Investigative Committee has classified the collapses as terrorist acts.

And the state-run Moscow Railways reported that the Bryansk bridge had been blown up in an "illegal interference."

However, Ukrainian officials have denied the involvement, accusing Russians of staging a "false flag" operation to "manipulate international opinion" ahead of the Istanbul negotiations.

In Nigeria's Niger State, rescue operations continued over the weekend after at least 200 people died in flooding caused by torrential rain which hit on Thursday.

Emergency services said 500 people were still missing and 3-thousand residents were displaced in the market town of Mokwa in what is being described as the worst disaster in the area in six decades.

The National Emergency Management Agency announced on Sunday that it had begun providing relief packages to people affected, and authorities will focus on recovering bodies to prevent potential outbreaks of disease.

In the United States, a 16-year-old transgender athlete has secured two golds and one silver medal at the California Interscholastic Federation State Track and Field Championships, stirring up a controversy over the participation of transgender athletes in a girls' competition.

The championships that involved AB Hernandez saw protests, with demonstrators displaying signs opposing transgender inclusion in girls' sports.

President Donald Trump criticized California's decision to permit Hernandez's participation, threatening to withdraw federal funding from the state.

Choi Chi-hee, Arirang News.