A manhunt was launched after a masked man has released 'gas' on the Manchester Metrolink, which made passengers 'dizzy' and 'Losing Consciousness'.
The alleged gas attacks took place two separate occasions on the Bury line of the tram network and were worried about what they might have inhaled.
The first incident took place on Thursday 20 March and then again on Saturday 22 March.
According to the news of Manchester Evening, the suspect, who went on board between the Queen's Road and Crumpsall environment, noted in a gas mask covered on his mouth, just before commuters heard a 'hissing' sound and were hit with the strong scent of gas.
It is thought that the substance was butane gas.
A passenger, who witnessed the incident on Thursday: 'I was on the tram and a man stepped in Queen's Road with a blue face mask with an industrial gas mask over it.
“There was a hissing sound and people started looking around. And then we melt gas, it was really strong. A girl who was around stood up and left him. People really looked worried.
“I had a headache and felt dizzy and a bit sick. When the tram came to Abraham Moss, I and a few other people got out and I reported it to the police. '
The alleged gas attacks took place two separate occasions on the Bury line of the tram network
Yesterday there were countless reports about another incident on board the same Bury Line service.
“Some guy was on the tram with a gas mask some gas and everyone had to get out,” wrote a person online.
Another added: “I was on it, sat opposite him and saw him turning the gas bus in his pocket to let it go.”
A person on Facebook said: 'Last night on the way home of my work on the Metrolink Street to Bury, a man went on the back of the crowded tram in an industrial gas mask with a blue hoodie and a backpack.
'After two minutes that he came in, he started to fiddle in his pocket, everyone started to worry and panic, many people started running the tram away from him, the smell and effect of whatever substance he was extremely strong, I lost almost five seconds after five seconds.
'I called all the emergency services and was placed in quarantine for four hours and held in the back of a van. Fortunately I am fine and all others seemed good. God knows what we have inhaled and I can only thank God for those who watch over me because it could be a lot worse. '
MailOnline approached the police of Greater Manchester and transported for Greater Manchester for comments.
