ATP Oil & Gas Names New Independent Auditor

ATP Oil & Gas announced that the Audit Committee of ATP's Board of Directors has appointed Deloitte & Touche LLP as the independent auditors for ATP to audit the Company's financial statements for the fiscal year ending December 31, 2004. The Audit Committee dismissed KPMG LLP ("KPMG") as ATP's independent auditor following completion of services for the fiscal year ending December 31, 2003. KPMG has served as ATP's independent auditor since 1997. On April 23, 2004, the Company filed a Form 8-K Report with regard to this change of independent auditors.