The Central Bank has issued a warning about investment firm Bernstein, Whitman & Lloyds, which it said had been offering services in Ireland without authorisation.

In its warning the bank notes that it is a criminal offence to operate as an investment firm without its approval and that customers of such firms would not be eligible for compensation funds in the event of a problem.

The Central Bank issues regular warnings about unauthorised firms and maintains a list of such companies on its website.

People with information relating to potentially unauthorised firms are also asked to contact them.