New South Wales police have found that a man from Sydney has been reportedly involved in almost 27 cases of real and attempted sexual attacks in a span of two decades.

Police have claimed that the man, who may now be 45 to 64 years old, attacked girls and women belonging to the age group between 14 and 55 by secretly entering their homes from 1985 to 2001. It was in 2000 when police discovered five sexual assaults attempted and committed in the eastern suburbs. Following the discovery, they followed up the investigation from 2005.

Police established a special task force called Task Force Doreen and have now linked the man with around 27 attempted and committed sexual abuses in a span of almost 15 years.  Every single case reported had to undergo a DNA and similar testing to prove the man guilty. However, the identity of the suspect has not yet been revealed.

Police said that there was a reason behind keeping the identity of the man still a secret. Even after the DNA matching and testing across Australia and other parts of the world, the case was unsolved. This is because they have not yet identified the exact face of the criminal.

The Guardian reported that some of the attacks took place in Centennial Park in Sydney while others were committed between Bondi and Bronte beach. It also claimed that the victims were threatened with a knife. The police have specified the basic body features of the man to help in his identification. He is around 160 to 180 cm tall and has a dark complexion, broad nose, brown eyes and wavy hair.

The look and appearance of the man, according to 9News, changed over time. In 1985, he was described as a thin man while in the early 1990s, he was medium built. In later 1990s, however, he is said to be of muscular built.  “He kept his face covered on all occasions, and in most cases, he was dressed in casual clothing, including tracksuits, hooded jumpers, football-style shorts or singlets,” NSW police said in a statement on Monday.

Detective Acting Superintendent Mick Haddow said that the department is seriously committed to identifying this man. Police claimed that no other offense has been reported against the man from Sydney since 2001. Nonetheless, the authorities are trying to safeguard the community from such people.