Police last week released this E-fit of the suspect. Image: Met Police

Police hunting a man behind a string of sexual assaults in Hackney Marshes have made a third arrest.

A 16-year-old boy was apprehended on Wednesday and remains in custody in north London.

It follows the arrests of an 18-year-old man on 7 June and a 16-year-old boy on 17 June, both of whom have been released on bail pending further enquiries.

Detectives continue to appeal for information regarding the attacks, and last week released an E-fit of the suspect after a number of similar descriptions from witnesses.

He is thought to be a light-skinned male, possible mixed race, aged 16 or 17, who usually wears a grey tracksuit.

The suspect, on a bicycle, has approached lone women who are out either walking or jogging. He has grabbed their buttocks from behind, or touched their genitals or breasts, before making inappropriate comments and riding off.

Officers have received multiple reports between February and June but believe there are more incidents that have gone unreported. They are urging any women who have not yet spoken to the police to make contact.

Detective Superintendent Mike Hamer said: “We have now made three arrests in connection with these sexual assaults and our investigation continues at pace.

“I understand these assaults have caused considerable concern among the community, but we have a dedicated team of officers working around the clock and carrying out a number of enquiries to bring the perpetrator to justice.

“This investigation is a priority for my team and I, we are taking it extremely seriously.

“We also have an increased police presence in the area, and officers are speaking with members of the community to provide reassurance. Anyone with any concerns can speak to these officers or call 101.

“We are continuing to appeal for the public’s help and we would ask that anyone with information that might help our investigation, or any victims who have not yet come forward, to contact police as a matter of urgency.”

Anyone who has information that could help police should call 101 or tweet @MetCC and quote CAD 2905/22JUN.

To remain 100 per cent anonymous, contact the independent charity Crimestoppers on 0800 555 111 or online at crimestoppers-uk.org.