The top two executives of a well-known accounting and auditing firm were arrested yesterday on charges of attempting to bribe a senior Tax Authority official, the Finance Ministry said in a statement. The Administrative Control Authority made the arrest after it found that the executives were trying to understate the tax dues of one of their major clients, the ministry said without revealing the names of the firm or its owner. Salah Mohammady Ibrahim, who heads an arm of the Tax Authority which handles joint stock companies, was the official who resisted the carrot, two sources who spoke to Enterprise on condition of anonymity confirmed.