(1) Where a Commissioner receives information from any source that a workman has died as a result of an accident arising out of and in the course of his employment, he may send by registered post a notice to the workman' s employer requiring him to submit, within thirty days of the service of the notice, a statement, in the prescribed form, giving the circumstances attending the death of the workman, and indicating whether, in the opinion of the employer, he is or is not liable to deposit compensation on account of the death.