Huo Jingnan

Updated at 10:46 p.m. ET

A gunman armed with an assault rifle killed at least 27 people and wounded more than 52 in a Thai city while livestreaming himself on social media Saturday, officials say.

The suspect has been identified as a junior soldier at a base near the city of Nakhon Ratchasima, which is also known as Korat and is about a 180-mile drive northeast of Bangkok.

China says it has launched an investigation into "issues" related to the death on Friday of a doctor whose early efforts to alert his colleagues to the dangers of a new coronavirus were quashed by authorities.

Meanwhile, President Trump spoke with China's leader Xi Jinping to discuss the coronavirus epidemic, which has rapidly gone global since it began in China in December.

Dr. Li Wenliang, an ophthalmologist working in Wuhan, the Chinese city where the epidemic originated, died on Friday local time, weeks after he was hospitalized and treated for a coronavirus infection.

A small relic of wood believed to be a fragment of the manger where Jesus was laid after his birth arrived in Bethlehem on Saturday, a gift from Pope Francis to help mark the start of the Christmas season.

Dozens of coal miners are expected on Capitol Hill on Tuesday, where they'll press federal regulators and members of Congress to address the epidemic of deadly progressive massive fibrosis, the advanced stage of black lung disease.