Perry thanks fans for record milestone

Katy Perry says she "owes" fans after equalling a US chart record.

The 26-year-old singer thanks fans after her latest song 'Last Friday Night (T.G.I.F.)' topped the Billboard Hot 100 , making it the fifth track from her 'Teenage Dream' one album to top the charts - a record initially set by Michael Jackson with the singles from his 1987 album 'Bad'.