Australian entertainer Rolf Harris has reportedly been questioned by British police over further allegations of sexual offences.

Police confirmed that on two separate occasions this week they questioned an 84-year-old man over the allegations.

They refused to reveal his identity, but the man is the same age as Harris and was questioned in Stafford, where the former star is serving time after being convicted last year of indecently assaulting girls and young women.

The disgraced artist and television entertainer was jailed in July for five years and nine months after he was found guilty of 12 charges of indecently assaulting four girls in the UK between 1968 and 1986.

Harris denied inappropriately touching any of the alleged victims and pleaded not guilty in court.

At the time, police said more women had come forward with similar allegations.

The news came as former glam rock star Gary Glitter was found guilty of a string of sexual offences against young girls.

Glitter, whose real name is Paul Gadd, will be sentenced on February 27.