A man who killed his ex-girlfriend and her new boyfriend outside a Matalan store in Cardiff has been jailed for life with a minimum term of 23 years.

Andrew Saunders, 21, pleaded guilty to stabbing Zoe Morgan and Lee Simmons to death in September last year as they arrived for work.

Their bodies were discovered outside the store in Queen Street, Cardiff city centre, at 5.50am on September 28.

Saunders purchased latex gloves and knives leading up to the double murder, and searched Google for things like "the easiest way to kill a person" and "how long do murderers serve in prison".

His final web searches were "how to slice a neck" and "how to smoke a cigar".

He inflicted eight stab wounds on each victim, using two knives.

Mrs Justice Nicola Davies told Saunders: "In a sustained and brutal attack you ended these lives.

"You took away the futures of Lee Simmons and Zoe Morgan. You robbed the families of Lee Simmons and Zoe Morgan of a much loved son and a much loved daughter.

"The effect on each family has been devastating."

Saunders admitted murdering the couple at a hearing in December 2016.

Miss Morgan, who worked as a window dressed in the store, had recently graduated from the University of South Wales.

Following her death, her family said: "She was taken away from us tragically, too soon, and has left a massive hole in our lives that will never be filled.

"Zoe will always be in our hearts forever and always. We are all broken-hearted.