Eerie footage from interview with notorious serial killer Aileen Wuornos suggests chilling theory just before she was executed

An interview with Aileen Wuornos ahead of her execution shows the serial killer suggesting a chilling theory about her murders.

Wuornos was working as a prostitute when she shot, killed and robbed seven of her clients in Florida during a 12-month period between 1989 and 1990.

Despite Wuornos claiming her crimes were committed in self-defense after being sexually assaulted, she was found guilty and was sentenced to death.

Ahead of her execution, she took part in true-crime documentary Aileen: Life and Death of a Serial Killer, directed by filmmaker Nick Broomfield.

One of his interviews with Wuornos has begun to do the rounds on social media again and shows the killer endorsing a chilling theory about the police’s activity.

Broomfield asked Wuornos why she killed the seven men in such a short span of time.

Aileen Wuornos argued her crimes were committed in self defense (Lafayette Films)

She replied: “Because the cops let me keep killing them, Nick, don’t you get it?”

Wuornos also argued that the police were already following her and allegedly allowing her to kill these men.

When Broomfield asked again, this time pointing out most people do not commit murders, she appeared to grow frustrated.

The convicted serial killer answered: “Oh you are lost Nick, I was a hitchhiking hooker, running into trouble.

“I shoot the guy if I ran into trouble, physical trouble, the cops knew it.

“When the physical trouble lot came around, they thought 'let em clean the streets, then we’ll pull her in', that is why.”

Wuornos did not give any evidence to substantiate her claim that police let her continue killing. She was executed on October 9 2002, aged 46.

Broomfield got to know Wuornos while filming the documentary and even weighed in on her mental state and behavior.

Wuornos was executed on October 9 2002, aged 46 (Florida DOC/Getty Images)

In an interview in 2004, he said: “I think this anger developed inside her. And she was working as a prostitute. I think she had a lot of awful encounters on the roads. And I think this anger just spilled out from inside her. And finally exploded. Into incredible violence. That was her way of surviving.

“I think Aileen really believed that she had killed in self-defense. I think someone who's deeply psychotic can't really tell the difference between something that is life threatening and something that is a minor disagreement, that you could say something that she didn't agree with.

"She would get into a screaming black temper about it. And I think that's what had caused these things to happen. And at the same time, when she wasn't in those extreme moods, there was an incredible humanity to her.”