China is expected to decide soon whether to formally arrest a Japanese businessman detained in Beijing since March on suspicion of espionage, sources familiar with the bilateral relationship said Wednesday.The Chinese government recently informed Tokyo that the Japanese national has been placed in criminal detention, which allows for up to 37 days of detention while authorities decide on formal arrest under Chinese law.Beijing has not responded to Tokyo's repeated requests to quickly release the employee of drugmaker Astellas Pharma Inc.His prolonged detention could further worsen Sino-Japa…READ FULL ARTICLE