Three police officers from Butler have filed a federal lawsuit in Kansas City, claiming negligence from city officials led to permanent injuries during a 2007 raid on a meth lab.

The officers allege the city failed to warn them of the risks of meth labs and properly train them in the use of available protective equipment, in particular breathing masks to protect the officers from lab fumes. Officers Mark Frost, Harold Anderson and Kenneth Rush were hospitalized for about a week with chemically induced pneumonia and heart murmurs, according to the lawsuit.

On the day of the raid, the meth makers poured chemicals into a sump pump that created a poisonous mixture of chemicals the officers inhaled. That lawsuit claims the full extent of the injuries isn’t known.