According to one report, the investigation into the Madeleine McCann disappearance is costing authorities about $10,000 a day. Madeleine is seen here in an age progression photo, which she may look like today.  Photo credit: Photo Released by Authorities)

British authorities have not given up on their search for Madeleine McCann and according to one report, the investigation into her disappearance and whereabouts is costing the Home Office almost $10,000 a day.

The Daily Star reports about $8,900 a month goes toward detectives' salaries, transportation, supplies and additional staff involved in Madeleine's case.

The publication claims the new search for Madeleine, which launched in May 2011, has likely cost over $3 million up to now.

Madeleine -- who was about to turn four -- vanished on May 3, 2007 while on vacation with her family in Praia da Luz, Portugal. Her parents, Kate and Gerry McCann, had been dining with friends and left the girl and her twin siblings in the villa where the family was staying. When the McCanns returned, Madeleine was gone.

Despite the five years that have passed since Madeleine vanished, her parents have not stopped believing she is alive, according to the Star.

Anyone with any information regarding Madeleine's case should contact the McCanns through their website, www.findmadeleine.com, or call their investigation line at 0-845-838-4699.