Colorado attack seventh mass shooting in seven days in US

There were three mass shootings on a single day last week

Police work on the scene outside of a King Soopers grocery store where a shooting took place Monday. Picture: David Zalubowski/AP

The mass shooting at a supermarket in Boulder, Colorado, on Monday is the seventh mass shooting in seven days to occur in the United States including three on Saturday alone.

On Saturday March 20, there were mass shootings in Houston, Dallas and Philadelphia.