Jang Yoon-gi, center, accused of murdering a teenage high school student, speaks to reporters outside a police station in Gwangju, May 14. Yonhap

The acting national police chief will cut short his trip to the United States and return home early amid growing controversy over the police response to a high-profile murder case, the agency said Wednesday.

Acting National Police Agency Commissioner Yoo Jae-seong is in the U.S. to attend the United Nations Chiefs of Police Summit (UNCOPS) from July 5-11, but he will return home on Friday "given public concern and interest" regarding the recent murder case involving a female high school student, according to the agency.

Allegations have intensified over possible ties between local investigators and the father of Jang Yoon-gi, the suspect accused of killing a 17-year-old female student and attempting to murder a 17-year-old male student in the southwestern city of Gwangju in May.

Jang's father is a serving police officer in the city.