Anthony Artusa was travelling on the City Loop train through Melbourne on Metro Trains when he apparently sat down on a seat with what he estimated were 20 needles sticking out.
In a tweet, Mr Artusa said: "Word of warning when travelling on @metrotrains. Had a lovely surprise this morning when I sat on a seat with around 20 needles sticking out of it. #NeedlesofMelbourne
Victoria Police and Metro Trains responded to the tweet, stating they were interested in hearing more, and now the train company has said they are looking into it.