SA Police have released new CCTV showing the suspect going to and from the Blair Athol park.

Police have dropped charges against a man over an alleged rape of a 10-year-old girl in a toilet block of a public reserve in suburban Adelaide.

A 29-year-old man was arrested yesterday over the alleged attack but the charges were dropped today.

Police now say they have arrested another man, 32, from Adelaide’s northern suburbs who has been remanded in custody, The Advertiser reports.

The arrests are related to an alleged rape in a public toilet two weeks ago in Blair Athol Reserve, a public area 15km north of Adelaide’s CBD.

The first man was arrested at his home in Adelaide’s inner north by detectives from the Special Crime Investigation Branch, who descended on the property after 6pm Wednesday.

The 29-year-old was charged with rape, aggravated indecent assault, gross indecency and unlawful detention, but the charges were later dropped.

Police said forensic evidence cleared the 29-year-old man of direct involvement of the attack and he has been “unconditionally released”, according to The Advertiser.

The brazen and sickening attack allegedly happened in the toilets of the public reserve between 5pm and 5.30pm on April 3.

Nearby, kids were playing soccer, according to The Advertiser of Adelaide. The victim told her mother the attacker was accompanied by two young girls, who looked like they were three and five years old, and referred to him as “dad”.

During the attack he reportedly taped the victim’s mouth and eyes and bound her hands.

The victim’s mother, who cannot be identified for legal reasons, said the attacker terrified her daughter, telling her, “I don’t care if your mum is outside”.

CCTV footage gathered from a nearby house captured a man leaving the scene, pushing a double stroller carrying two small girls.

Police received over 50 Crime Stoppers tip-offs during their investigation and thanked the public for their assistance.

Anyone with information who has not yet spoken to police is asked to contact Crime Stoppers South Australia on 1800 333 000.

