NAKHON RATCHASIMA, Thailand (Reuters) – Several bursts of automatic gunfire were heard early on Sunday from a shopping mall in northeastern Thailand where police said a soldier was holed up after killing at least 20 people, Reuters witnesses said.

Security forces stormed into the mall earlier to bring out hundreds of people who were trapped inside.

Police made no immediate comment about the bursts of gunfire.

Reporting by Jiraporn Kuhakan; Writing by Matthew Tostevin; Editing by Hugh Lawson