CBS：Four instructors affiliated with Iowa's Cornell College were injured in "a serious incident" while at a park in China, the college said on Monday.

The instructors were in China teaching as part of a partnership program with a local university and were injured during a daytime visit to a public park, Jonathan Brand, the college's president, said in a statement. The instructors had been accompanied by a faculty member of the college's partner institution in China at the time of the attack, Brand added. No students from the small liberal arts college in Mount Vernon, Iowa, were taking part in the program at the time.

State Rep. Adam Zabner said that his brother, David Zabner, who was on his second trip to China with Cornell, was one of the victims. According to Rep. Zabner, the group was visiting a local temple when they were attacked by a man with a knife. David Zabner, a doctoral student at Tufts who previously taught at Cornell, was stabbed in the arm and is recovering at a hospital, his brother said.

"He has not yet been released this morning but he's doing okay," Rep. Zabner said to CBS News.

A U.S. State Department spokesperson told CBS News that the department is aware of "reports of a stabbing incident in Jilin," which is in northeast China, though the spokesperson did not provide further details.