UPDATE 1-Accused Thai school shooter had watched violent content online, police say

(Adds comment from suspect's mother in paragraphs 4-6, 12-15) * Education Ministry to develop new school safety protocols over next three months * Police say teacher confiscated suspect's BB gun after

(The article has been published through a syndicated feed. Except for the headline, the content has been published verbatim. Liability lies with original publisher.)