'It's absolutely tragic': Harris on Colorado mass shooting

A 21-year-old man faces 10 counts of murder in connection with Monday's mass shooting at a Colorado grocery store, authorities said on Tuesday.

The suspect was in stable condition after he was wounded in an exchange of gunfire with responding police officers at the King Soopers outlet in Boulder, about 28 miles (45 km) northwest of Denver, on Monday afternoon.

Authorities have not yet offered a possible motive for the bloodshed, which came six days after a gunman went on a killing spree in the Atlanta area, fatally shooting eight people at three day spas before he was arrested.

The 10 victims, whose names were released at a Tuesday morning news conference, range in age from 20 to 65 and include Eric Talley, 51, an 11-year veteran of the Boulder police force.

Talley was the father of seven children and had recently been looking for a less dangerous job, according to a statement released by his father.

Harris praised the officer, saying he acted with "great courage and heroism."

The vice president made the remarks during a swearing-in ceremony for Ambassador William Burns to be the next CIA director.