The search for two missing B.C. siblings has entered its sixth day.

An Amber Alert was issued July 19 after Joshuah, 10, and Aurora Bolton, 8, were reported missing after their mother Verity Bolton didn’t return them to their father, the primary caregiver, after a planned vacation.

They left Surrey on June 28 and were supposed to return to their home on July 17.

Surrey RCMP issued the Amber Alert Wednesday and have given updates daily.

Since then, police have confirmed that the children and their mother have also been travelling with Verity’s father, 74-year-old Robert Bolton, and her boyfriend, 53-year-old Abraxas Glazov.

Since June 28, there have been sightings in Chilliwack, Kelowna, Merritt and most recently Kamloops on July 15.

Police launched a tip line late last week for any information about their location. Any tips can be directed to 604-599-7676, or through email at surreyamberalert@rcmp-grc.gc.ca.