Four people have been injured after a miniature steam-engine train derailed in Canberra on Thursday morning.

A miniature steam-engine train derailed in Canberra on Thursday morning. Four people were taken to hospital after the derailment at Cockington Green Gardens.

About 10am today, Thursday 28 September, a train carriage at the park derailed, injuring several passengers.  

Four people were treated at the scene by ACT Ambulance Service paramedics and transported to hospital.  

In a statement posted to its website, the business said the passengers taken to hospital all had non-life-threatening injuries.

"Cockington Green Gardens first thoughts are with those who were involved in the incident and deeply regrets this incident, which is now the subject of police and Worksafe ACT investigations," the statement said.

"The attraction remains open although the miniature steam train will not operate until further notice.

"Due to those current investigations and ongoing interviews, Cockington Green Gardens advises that further comment is not possible at this stage."

The gardens are a popular tourist attraction featuring a number of activities and displays.

As well as the train, the gardens are best known for the hand-crafted miniature village displays.

The train was built 36 years ago and has a maximum capacity of 35 children.

According to the gardens' website, the train and the track were serviced last month ahead of spring.

"We regret this necessary inconvenience, however it is important that the train is able to cope with the expected increase in demand with the upcoming Floriade and school holiday period," the notice from August 15 said.

Cockington Green is a privately owned tourist park which describes itself as “one of Australia’s most charming and unusual tourist attractions”.

The spring school holidays are a busy time for the park, coinciding with Canberra’s largest tourist event, Floriade. Cockington Green had taken the train offline for two days about a month ago for “pre-Floriade maintenance”.

“We regret this necessary inconvenience however it is important that the train is able to cope with the expected increase in demand with the upcoming Floriade and school holiday period,” Cockington Green’s owners said at the time.

“The safety of visitors and staff is the most important consideration in the operation of our beloved miniature steam train.”