Koebel's lawyer challenges Dr. McQuigge at Walkerton inquiry

There were angry words on Wednesday at the Walkerton public inquiry.

The lawyer for former water manager Stan Koebel launched a blistering cross examination of the medical officer of health.

Bill Trudell challenged Dr. Murray McQuigge on his allegations that the water manager purposely deceived health officials last May.

Dr. McQuigge says the tragedy could have been prevented, had the water manager warned health officials about problems sooner.

Seven people died from drinking water contaminated with E.coli bacteria.