American TV network ABC has been found to be secretly taping gays kissing in public.

According to MyFox Birmingham, ABC news is conducting a social experiment which aims to gauge the reactions of the public to displays of affection between members of the same sex.

An actor inside an RV parked in Birmingham, Alabama confirmed a witness account of ABC’s week-long project.

A police officer told Fox6 that “three or four” people had complained about men kissing in public, but nothing illegal is going on.

The actor told Fox 6: “Yes, we are working for ABC News.”

The network has been known in the past for controversy surrounding homosexuality.

Earlier this year Isaiah Washington, star of medical drama Grey’s Anatomy, came under fire when it was found the he had used the word “faggot” during a heated on-set exchange with co-star T.R. Knight.

Earlier this year, Media Matters, a media watchdog group, highlighted the controversy around a haircut obtained by candidate John Edwards as it was presented on the ABC News Blog: “The hair cut revelation did little to minimise what some call Edwards’ ‘Breck Girl’ image.”

In August this year however, ABC topped the Gay and Lesbian Alliance Against Defamation’s (GLAAD) league table of “responsible” portrayals of lesbian, gay, bisexual and transgender people on network television.

ABC was praised by GLAAD, which said that its approach “can serve as a best practice model.”

It gave the network a “good” grade, finding that 15% of total broadcast hours were LGBT-inclusive and that the network showed “several multi-dimensional, complex LGBT characters.”