What we know about the mass shooter in Thailand

A bullet shell is seen in front of the Terminal 21 shopping mall following a gun battle involving a Thai soldier on a shooting rampage, in Nakhon Ratchasima, Thailand February 9, 2020. REUTERS/Soe Zeya Tun

NAKHON RATCHASIMA, Thailand (Reuters) - At least 29 people were killed and dozens were wounded in an 18-hour shooting spree in northeastern Thailand that ended in an overnight standoff at a busy shopping mall.

What is known about the attacker: