providing the results of the medical checks allegedly carried out on Mr. Abdelli while he was being held. The Committee also takes note of the State party’s failure to comment on the precise allegations set out above relating to 1995. Lastly, the Committee notes the existence of detailed and substantiated information provided by the complainant concerning his hunger strikes in Tunis central prison in 1995 and in Grombalia prison from 28 November to 13 December 1997, mounted in order to protest against the treatment he had suffered and to secure medical care. The complainant refers to letters sent to the prisons administration following his hunger strikes, which produced no result. The Committee notes that the State party has not commented on this information. The Committee considers that these elements, taken together, should have been enough to trigger an investigation, which was not held, in breach of the obligation to proceed to a prompt and impartial investigation under article 12 of the Convention. in order to lodge his complaint, for example by presenting to the court a certificate proving that a complaint had been lodged with the office of the public prosecutor, or displaying obvious traces of torture or ill-treatment, or submitting a medical report. On this latter point, to which the Committee wishes to draw its attention, it is clear that the complainant maintains that his request for a medical examination in 1992 was refused, and that the State party challenges this allegation on the grounds that the complainant enjoyed appropriate care and proper medical supervision, as stipulated in the prison regulations, throughout his stay in prison. The Committee observes that this response by the State party is categorical and general and does not necessarily answer the complainant’s precise affirmation that he asked the judge in 1992 to order a medical examination. Finally, the Committee refers to its consideration of the report submitted by Tunisia in 1997, at which time it recommended that the State party should arrange for medical examinations to be organized systematically when allegations of abuse were made. 10.6 The Committee also observes that article 13 of the Convention does not require either the formal lodging of a complaint of torture under the procedure laid down in national law or an express statement of intent to institute and sustain a criminal action arising from the offence, and that it is enough for the victim simply to bring the facts to the attention of an authority of the State for the latter to be obliged to consider it as a tacit but unequivocal expression of the victim’s wish that the facts should be promptly and impartially investigated, as prescribed by this provision of the Convention.14 10.8 In the light of its practice relating to article 13 and the observations set out above, the Committee considers that the breaches enumerated are incompatible with the obligation stipulated in article 13 to proceed to a prompt investigation 10.9 Finally, the Committee considers that there are insufficient elements to make a finding on the alleged violation of other provisions of the Convention raised by the complainant at the time of adoption of this decision. 10.7 The Committee notes, as already indicated, that the complainant explains that he did complain to judges in 1992 and 1995 of the treatment inflicted on him, resorted to hunger strikes and wrote to the prison authorities to complain about the conditions imposed on him. The Committee regrets that the State party has not responded or provided the necessary clarification on these points. Moreover, and notwithstanding the jurisprudence under article 13 of the Convention, the Committee notes the State party’s position maintaining that the complainant should have made formal use of domestic remedies 11. The Committee against Torture, acting under article 22, paragraph 7, of the Convention, is of the view that the facts before it disclose a violation of articles 12 and 13 of the Convention. 12. Pursuant to rule 112, paragraph 5, of its rules of procedure, the Committee urges the State party to conduct an investigation into the complainant’s allegations of torture and ill-treatment, and to inform it, within 90 days from the date of the transmittal of this decision, of the steps it has taken in response to the Views expressed above. 14 Communications N° 6/1990 (Henri Unai Parot v. Spain) and N° 59/1996 (Encarnación Blanco Abad v. Spain). 132