The attacker is said to have made references to Allah and asked victims whether they were Muslim as he carried out his attack.
She said the police officer screamed "f*** oh my God, I can't believe it" after shooting Mr Castile five times.
Residents from a town in Minnesota were forced to leave their homes after the propane truck collided with a freight train.
A Minnesota man showed "superhuman strength" when he bent a burning car door in half and pulled a driver to safety.
A bridal party was left towelling off after a jetty collapsed during a pre-wedding photo shoot in the US state of Minnesota.
As the US battles sub-zero temperatures, ITV News Washington correspondent Robert Moore illustrates just how cold it is in Minnesota.
Five people have been killed in a shooting at a sign company in the US city of Minneapolis, police have told Reuters. The death toll included the gunman.
Two people have been killed and at least three men critically wounded in a shooting at a sign company in Minneapolis in the US state of Minnesota.
Minneapolis police, local sheriff's deputies and police from nearby communities converged on the Accent Signage Systems after the shooting. Further details remain unknown.
The three injured men were said to be in a critical condition at the city's Hennepin County Medical Center, a spokeswoman said.