Christine Weller, Colleen Marian Daignault. (File/The Canadian Press)

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Serial killer Clifford Olson has died, nine days after reports came out that he was diagnosed with cancer.

Some key dates in his life:


Jan. 1, 1940: Clifford Robert Olson Jr. is born in Vancouver.

1957: Olson receives his first jail sentence, nine months behind bars for burglary. He soon escapes and is recaptured, a pattern that recurs at least six times over the next two decades.

Sept. 7, 1980: Olson is released from jail for the final time before his killings begin.

Nov. 17, 1980: Olson claims his first victim, 12-year-old Christine Weller, pictured left. Police initially do not treat her disappearance as suspicious. Her body is found on Christmas Day showing signs of stab wounds and strangulation.

Apr. 16, 1981: Olson abducts Colleen Daignault, right, 13, of Surrey, B.C. Her body is found five months later.