Canadian serial killer who was jailed for 12 years over rape and murder of three teen girls including her sister has been volunteering at her children’s elementary school

• Karla Homolka, 47, raped and killed three teen schoolgirls in Canada in the 1990s
• Homolka and then-husband Paul Bernardo murdered Kristen French, Leslie Mahaffy and Karla’s 15-year-old sister Tammy
• She divorced Bernardo during her 12 year sentence and was released in 2005
• Homolka then married her lawyer’s brother and the couple have three children 
• She has been spotted of late volunteering at the private Christian school in Montreal where her children are enrolled

A Canadian serial killer who was jailed for the rapes and murders of three teen girls – including her sister – in the 1990s has been spotted volunteering at her children’s elementary school.

Karla Homolka served 12 years in prison after being convicted in 1993 of raping, torturing and killing schoolgirls Kristen French and Leslie Mahaffy with her then-husband Paul Bernardo.

She also played a role in the death of her 15-year-old sister Tammy after she helped Bernardo drug, rape and ultimately kill her.

Homolka, who split from Bernardo while in jail, was released in 2005 and married her lawyer’s brother Thierry Bordelais.

Canadian serial killer Karla Homolka who was jailed for the rapes and murders of three teen girls – including her sister – in the 1990s was spotted outside (above) her children’s elementary school in Montreal this week

Homolka (pictured in 1993) was jailed for 12 years for the rape and murder of the three teenage schoolgirls in the early 1990s

The 47-year-old, who has three children from her second marriage, now sometimes volunteers at the private Christian school in Montreal where her kids are enrolled.

She was pictured outside Greaves Adventist Academy by the Montreal Gazette this week – much to the outrage of concerned parents.

The convicted killer recently helped supervise a group of kindergarten students during a field trip, and on another occasion was invited into a classroom to show the children how to knit, City News reports.

Homolka also brought in a dog for a show-and-tell class and has been seen dropping and picking her children up from the school.’We don’t want her here,’ one parent said. ‘How would you feel knowing that your child is interacting with a person who is a serial killer? It’s not right.’

Homolka was convicted in 1993 of raping and killing schoolgirls Kristen French (left) and Leslie Mahaffy (center). She also played a role in the death of her 15-year-old sister Tammy (right)

A Seventh-day Adventist Church spokesman said the school board was fully aware of Homolka’s history.

‘She is not a regular volunteer and can never be alone with any children, either in school or churches,’ the spokesman said.