Mr. Hamdan manufactures wooden toys. His brother Mr. Hamid is responsible for managing financial transactions. There is Mr. Rahim, Ms. Rahima who is supplier and customer respectively. During the audit work, auditor realised that Mr. Hamid has done some fraud while making payment to supplier and receiving money from customer. According to you what possible fraud Mr. Hamid might have done? Suggest and explain which audit techniques should be follow to detect the fraud?