A fire and explosion at a convenience store in northwestern Mexico killed at least 23 people, including children, and injured 12 others, state authorities said.
President Trump met with President Xi on the sidelines of the Asia-Pacific Economic Cooperation summit last week. APEC's host, South Korea, is carefully balancing its relations with the U.S. and China.
Police said two people who were wounded remain in a life-threatening condition after the attack on Saturday. Passengers reported scenes of panic and chaos ,with many running through the carriages.