Dear [Name], I am writing to request your authorization for a late return of [item(s)] to [company/organization name]. Due to unforeseen circumstances, I am unable to return the [item(s)] by the specified deadline [mention the agreed-upon date]. I apologize for any inconvenience caused by this delay and assure you that I will return the [item(s)] as soon as possible. The reasons for my inability to return the [item(s)] include [briefly explain the reasons affecting the timely return]. I understand that the late return of [item(s)] may result in inconvenience for future users and may disrupt the smooth operation of your organization. Rest assured that I will take utmost care in handling the [item(s)] during the extended borrowing period to ensure its safety and proper functioning. If authorized, I kindly request an extension of [# of days/weeks] to return the [item(s)]. This additional time will allow me to fulfill my obligations and return the [item(s)] without any compromise on its quality. I want to emphasize my commitment to return the [item(s)] promptly and in the same condition as when borrowed. I understand that any damages or loss incurred during the extended borrowing period will be my sole responsibility, and I will promptly reimburse any associated costs. Please find attached any supporting documents, such as evidence of the unforeseen circumstances, if required. If there are any additional steps, requirements, or recommended actions I need to take to formalize this late return authorization, please let me know, and I will promptly address them. Thank you for your understanding and consideration in this matter. I look forward to your positive response granting me authorization for the late return of [item(s)]. Should you require any further information or clarification, please do not hesitate to contact me. Yours sincerely, [Your Name] [Your Contact Information]