Elected officials offer outpouring of support for Florida HS shooting victims

"If you pray, you ought to pray for these students and their school and their parents right now," Senator Bill Nelson, D-Florida, told ABC News.PlayABCNews.com
WATCH 'It's a bad day:' Florida senator says of mass shooting at school

At least 17 people were killed and over a dozen more injured in a shooting at a high school in Parkland, Florida Wednesday, according to law enforcement officials.

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Not long after the news broke, politicians reacted on Twitter as details about the shooting were still unclear. An investigation into the motive had only just begun on Wednesday as the officials, some local and others national, responded.

While many offered their prayers, some, like Sen. Chris Murphy, D-Conn., invoked previous attacks and appealed for change from the Senate floor.