Concerns have been raised about the cost of an arena planned for Cardiff Bay, with a heritage group claiming there could be a funding gap of more than £60m.
Cardiff council, which is developing the project in partnership with a private sector consortium, says it has “strong confidence” that money loaned to the consortium will be repaid.
Lyn Eynon, of Cardiff Civic Society, said: “We have been trying to find out how much the new indoor arena would cost the city and whether the claimed benefits will be realised.