People pray for victims who died in a mass shooting at Terminal 21 shopping mall in Nakhon Ratchasima, Thailand February 10, 2020. Holding candles, thousands of people attended a vigil in Thailand's Nakhon Ratchasima province on Sunday (February 9), a day after a soldier went on a rampage, killing least 29 people and wounding 57. REUTERS/Soe Zeya Tun

People pray for victims who died in a mass shooting at Terminal 21 shopping mall in Nakhon Ratchasima, Thailand February 10, 2020. Monks led prayers as people laid down white flowers in memory of the victims at the vigil, held by the Thao Suranari statue in the northeastern city. REUTERS/Soe Zeya Tun

People pray for victims who died in a mass shooting at Terminal 21 shopping mall in Nakhon Ratchasima, Thailand February 10, 2020. Most of the victims were at the city's Terminal 21 shopping centre, where the shooter held out against an overnight siege with an assault rifle and ammunition stolen from his army base. REUTERS/Soe Zeya Tun

Local people place flowers as they pray for victims who died in mass shooting, involving a Thai soldier on a shooting rampage, in Nakhon Ratchasima, Thailand February 9, 2020. REUTERS/Soe Zeya Tun

People gather as they pray for victims who died in mass shooting, involving a Thai soldier on a shooting rampage, in Nakhon Ratchasima, Thailand February 9, 2020. REUTERS/Soe Zeya Tun

People gather as they pray for victims who died in a mass shooting, in front of Terminal 21 shopping mall in Nakhon Ratchasima, Thailand February 10, 2020. REUTERS/Soe Zeya Tun