A foster mother from Morinville has been found not guilty of manslaughter in the death of a child in her care.

Christine Laverdiere was charged with second-degree murder in May 2010 after the death of 21-month-old girl.

The charge was later downgraded to manslaughter.

The Crown argued during the trial that Laverdiere had inflicted "lethal traumatic injuries" on the child, possibly by shaking her.

However,a Court of Queen’s Bench judge ruled Wednesday that there was not enough evidence to rule out an accidental death and found her not guilty.

The child cannot be named under Alberta's Child, Youth and Family Enhancement Act.