Transcript for Mass shooting in Plano leaves 9 people dead, including the suspect

To the index of other news, and a mass shooting in Plano, Texas, has left nine dead. An officer responding to a shots fired call, killing the gunman. Authorities then discovered seven dead at the home. An eighth victim later dying at the hospital. The suspect knew the residents who had gathered for a cookout to watch the Dallas cowboys game. A home explosion in Indiana today left a residents destroyed. Neighbors reported feeling the blast this morning. Authorities believe a propane leak caused explosion. There were no injuries. And as kroy this country tonight, on this 9/11, a nation pauses to remember. On this 16th anniversary of 9/11, a moment of silence. New York City firefighters with engine ten and ladder ten is a absolute. They lost so many that day. At the flight 93 national memorial, a bell tolled. And at the September 11th memori in New York City, the names. And my grandmother Ruth Sheila lapin, grammy Ruth, I wish more than anything that I could have met you. I know that you were a wonderful person and I love hearing stories about you from my parents. Reporter: The president and first lady at the Pentagon. Nearly 3,000 loved ones remembered.

This transcript has been automatically generated and may not be 100% accurate.