One of the few remaining medieval parts of Cardigan Castle is in danger of imminent collapse.

The north east bastion - inside the castle complex - has been cordoned off and people warned to stay away.

The state of the wall was picked up following a survey carried out Bristol-based quantity surveyors Fenton Holloway.

"There are severe large cracks, bulging and weather sections of wall along with intrusive vegetation growth," the report states.

"This section is dangerous, it could collapse without warning and it would not be advised to work on or near this piece of wall in its present condition.

"For the safety of site users it would be prudent to demolish it as soon as possible and reconstruct it when funds are available."

Cadwgan Trust - who are in the throes of a feasibility study on the castle - have called on Cadw to make emergency repairs.

"We are very alarmed and concerned by this news," said Cadwgan chairman Jann Tucker.

"It seems ironic that we are spending huge amounts of time trying to secure the castle's future while the most important parts are falling to bits around us."

Local historian and medieval expert Fr Seamus Cunnane was also concerned at the state of the wall.

"We can't lose the north east bastion," he said.

"In past centuries the walls would have been redressed and repaired but we are now faced with a gap of hundreds of years so it is no wonder it has gone like this."

Ceredigion AM Elin Jones has said she will take the issue up with Cadw.