Trump says mass shooting in church that left 26 dead a 'mental health problem' and 'not a gun situation'

26 killed and around 20 wounded in worst ever mass shooting in TexasMotive for shooting unclearShooter's social media posts being examinedArmed resident confronted and chased assailantAttacker found dead in his vehicle nearby with several weapons insidePastor's daughter (14) among those killed

Investigators work at the scene of a mass shooting at the First Baptist Church in Sutherland Springs, Texas (AP) Newsdesk

A man opened fire inside a church in a small South Texas community on Sunday, killing 26 people and wounding about 20 others in what the governor called the deadliest mass shooting in the state's history.