There were conflicting accounts about where the fishing boats originated. Most said they were from the city of Dalian in the northeast, but on Thursday an engineer from the Wenzhou Engineering Survey Institute, in the southern province of Zhejiang, sent messages on Twitter and on China’s Sina Weibo microblog service saying the boats were from his institute and asking the public to pressure Beijing to take action.
“I have two appeals,” the engineer, Lu Zichuan, wrote. “First, release our people safely, this is most important; second, release the boats.”