3.10am EDT03:10
Thailand has begun using sleeper trains to transport Covid patients out of Bangkok, where hospitals have been overwhelmed by a recent surge in cases.
The first train left the capital on Tuesday, transporting 137 patients who were asymptomatic or had mild symptoms to their home towns in the north-east of the country.
Thailand is facing its third and most severe wave of Covid since the start of the pandemic, driven by the Delta variant, which has spread widely across the capital. Hospitals have been forced to treat patients in car parking areas, and to turn away patients who are severely ill.