A proposal to move Dublin's central library into the Ambassador cinema building on Parnell St has been given the go-ahead by city councillors.

The city council will become sub-tenants paying €1.2m annually in rent and €11.8m for fitout and tax costs if the scheme receives planning approval.

Some councillors complained there had been a lack of information about the project but City Manager, John Tierney, said negotiations were complicated and essentially involved a public-private partnership.

The Millennium Theatre Company is the current leaseholder of the Ambassador building, which was built as a theatre in the 18th century and is owned by the Rotunda Hospital.