Shootout inside family planning building in Colorado: police

A shootout has erupted between police and a gunman inside a Planned Parenthood family planning centre in the US state of Colorado, police said.

Four police officers have been injured in the ongoing standoff with a shooter inside the facility in Colorado Springs, said police spokeswoman Catherine Buckley.

An unknown number of civilians have been wounded, but there are no known fatalities so far, she said yesterday.