(CNN) A day after yet another school shooting left 17 dead at a South Florida high school , more questions emerged Thursday about the suspect's mental health and possible warning signs he left on social media. An additional two people shot at the school died at the hospital, Israel, the sheriff, said. The adoptive mother -- her cousin Lynda Cruz -- died in November of pneumonia, while his adoptive father passed away years ago, according to Blaine. The shooting has revived the debate over gun controlOne senator says congressional inaction is to blame for this latest massacre. "This epidemic of mass slaughter, this scourge of school shooting after school shooting, it only happens here not because of coincidence, not because of bad luck, but as a consequence of our inaction," Sen. Chris Murphy, D-Connecticut, said in an address to the Senate on Wednesday.

Source: CNN February 15, 2018 10:31 UTC