A Vancouver man who is facing an attempted murder charge in Clark County was arrested Tuesday on federal fraud charges in connection with his local tax preparation business. Keith M. Altamirano, 52, was scheduled to appear Wednesday afternoon in U.S. District Court in Tacoma on an indictment for 16 counts of aiding and assisting in the preparation of false and fraudulent returns. The U.S. Attorney’s Office said he was arrested late Tuesday. Altamirano was out of custody after posting bond in his Clark County Superior Court case. Altamirano has pleaded not guilty in that case to first-degree attempted murder, hit-and-run resulting in injury, possession of cocaine with intent to deliver and possession of fentanyl with intent to deliver. He’s accused of intentionally crashing his car into the motorcycle his son was riding, landing his son in the hospital. Altamirano operated Integrity Investments, known as Servicios Latinos. The U.S. Attorney’s Office said between 2017 and 2021, Altamirano prepared more than 12,000 tax returns, and his fraudulent practices amounted to $5 million in tax loss to the U.S. Treasury. The federal indictment accuses Altamirano of making false claims on clients’ income tax submissions, including listing fake medical expenses, charitable donations and expense deductions. It says Altamirano used whiteout to conceal his name on his clients’ returns.