An elementary school headmaster said Thursday he planned a gold shop robbery in
Thailand due to personal and financial problems and apologized to the families of the three people who were killed.
A 2-year-old boy was among the victims of the
shooting earlier this month that caused public outrage and increased pressure for a swift arrest.
Police arrested Prasitthichai Khaokaew, 38, early Wednesday and said he confessed to his crimes during interrogation.