Jehovahs' Witness Church in court

Supporters of a man suing the Jehovah's Witness Church gathered outside a Calgary courthouse Wednesday morning.

Lawrence Hughes and his supporters say they are warning the public about the church.

Hughes sued the religious group after the death of his 17-year-old daughter Bethany in 2002.

She was a member of the church and refused blood transfusions to treat her leukemia.

Her father claims church members, including Bethany's mother, intimidated the teen by teaching her that blood transfusions were against God's will.

The church denies the claim and is attempting to have the lawsuit thrown out.