Police investigating a number of incidents around the Tyne-Wear derby football match on Sunday, March 4 are appealing for witnesses.
An additional Metro service put on specifically for the transport of fans to the derby left Sunderland at 10.13am, arriving at Newcastle Station at 10.39am.
Train staff discovered one window had been damaged and another window pushed out during the course of the journey.
In a separate incident on a Metro from South Hylton ceiling panels were dislodged and there was graffiti.
There was also an assault on one of the trains.
Chief Superintendent Dave Pryer said: "After the match we said we would be further investigating incidents which happened both before and after the football had finished.
Anyone with information is asked to contact police on 101 ext 69191, or Crimestoppers anonymously on 0800 555 111.