M was forced by a policeman to sign a document entitled "Sinumpaang Salaysay" in which M implicated X as the brain behind the robbery of a bank where P500,000.00 were lost. The document was prepared by the policeman upon advice of B, the bank's lawyer, who was present when the policeman asked M to sign the document. As M refused to sign it, the policeman held him by the neck and forced him to sign, which he did as he was afraid he might be bodily harmed.

During the hearing of the Robbery before the Fiscal's Office, B submitted the "Sinumpaang Salaysay" as evidence, on the basis of which X was included in the information filed by the Fiscal in court.

When M testified in court, he repudiated the document and told the court there was no truth to its contents as he was merely forced to sign it. Did lawyer B commit any crime when he used the "Sinumpaang Salaysay" as evidence? (1987 BAR)