At a glance
• A teenager has been convicted after a string of ‘deeply disturbing’ sexual offences across London’s transport network
• Police fear he may have targeted more women and girls who have not yet come forward
• The offences happened in Tube stations, when semen was squirted on to the victim’s legs and bottoms
A teenager sexually assaulted a series of women and girls after trailing them through London Underground stations and squirting his semen on to their clothes, a court has heard.
Mashad Ahmadi, 18, carried out the “deeply disturbing” attacks at Tube stations across the capital over the course of a year.
When he was caught, detectives discovered the teen had taken an “upskirting” video of a woman on the Jubilee Line, as well as exposed himself to women on the Tube and filmed their horrified reactions.
On his phone, he also had indecent images of children, there were chat transcripts of him forcing young girls to engage in sexual activity and threatening to release explicit images if they did not comply with his demands.
Ahmadi, who was aged 16 and 17 at the time of the offences, was sentenced at Uxbridge Magistrates’ Court by Deputy Chief Magistrate Tan Ikram to a 12-month youth referral order.
The teenager, of Victoria Avenue in Hounslow, is also now under a sexual harm prevention order, and his iPhone 12 and iPad have been seized.
The court heard his first two victims were teenage girls at North Greenwich underground station on March 22, 2024.
He stood behind the girls on the escalator in two separate incidents, squirting a liquid resembling semen onto their bodies.
In the first incident, one of the victims said she felt something wet on her leg and turned around the confront the man responsible.
Ahmadi struck again at Northfields Underground station in west London on January 12 this year.
British Transport Police said a woman was heading to the platform when she felt a substance on her bottom, but did not immediately realise what had happened.
Ahmadi then approached her and said “excuse me, you have something there” while trying to wipe away the substance from her trousers with his gloved hand.
The woman stopped him, but noticed that the teenager continued to follow her on to the train while staring at her.
Two months later on March 5, a woman entered Green Park station to use the Jubilee Line, and noticed the teenager following her “uncomfortably closely”.
A member of the public pointed out she had a substance on her bottom when she got on to the train, and she left the train to clean it off.
Both incidents were reported and linked to the March 2024 attacks.
Police later linked the upskirting video to the same day as the Jubilee Line incident.
Ahmadi pleaded guilty to 15 offences - four counts of sexual assault, one charge of upskirting, three incidents of indecent exposure, three counts of making indecent images of children, three counts of threatening to share photography of a person in an intimate state between January and March 2025 and causing or inciting non-penetrative sexual activity with a girl aged 14.
Ahmadi was found to be inciting a 14-year old girl to send photos of her genitals and breasts.
The flashing offences took place across two days in March this year.
When Ahmadi was arrested at home on March 10, Ahmadi tried to falsely claim he had been at school during one offence. Forensic experts also proved it was the teenager’s own semen used in the attacks, said police.
Detective Chief Inspector Paul Attwell, from British Transport Police, praised the bravery of victims in coming forward, and warned there could be more women and girls who had been targeted.
“The defendant’s actions were utterly unacceptable, and the circumstances surrounding these offences were deeply disturbing and understandably caused significant trauma and distress to those affected”, he said.
“Their courage in speaking out enabled us to arrest him and uncover the full extent of his offending.
“This has been a highly complex investigation, and our enquiries remain ongoing. We believe there may be additional victims, women and girls who may have been sexually assaulted in a similar manner.
“If you believe you may have been a victim, I urge you to come forward. You will be treated with respect, listened to, and supported — we will never tolerate this behaviour.”
