1 Year Anniversary Of Deadly N. Mpls. Fire

MINNEAPOLIS (WCCO) -- We may never know what caused a deadly fire in north Minneapolis one year ago on Valentine's Day.

Five children -- ages 18 months to 8 years old -- were killed in the fire that started on the second floor of a family's duplex.

Their father, Troy Lewis, survived along with two other children.

Investigators were never able to determine the exact cause of the fire.