Tokyo police searched a rental office in the capital Monday over a body abandonment case allegedly committed by the president of an information technology company, investigative sources said.The 49-year-old suspect, Katsuya Mizuguchi, is believed to have used the rental office in the Shibadaimon district in Minato Ward as the office for his company, Linux Japan, after the body was allegedly taken out of the company's office in the Akasaka district in the same ward.Police arrested Mizuguchi on Friday on suspicion of removing the body of a man believed to be an executive of Linux Japan from the office in Akasaka around Oct. 5 to 6 last year.