The shooting happened on a street in the southwestern city of Quetta on Tuesday. The suspect, Anwar ul-Haq, initially said that unidentified gunmen shot and killed his American-born, 15-year-old daughter before he confessed to the crime, police official Babar Baloch said.

"Our investigation so far has found that the family had an objection to her dressing, lifestyle, and social gathering," another police investigator, Zohaib Mohsin, said. "We have her phone. It is locked," he told Reuters. "We are probing all aspects, including honour killing."

The family had recently returned to Balochistan province in predominantly Muslim Pakistan, a nation with conservative social norms, having lived in the United States for about 25 years, Baloch said.

The suspect has U.S. citizenship, the officer said. He said Haq had told him his daughter began creating "objectionable" content on the social media platform TikTok when she lived in the United States.

He told police that she continued to share videos on the platform after returning to Pakistan. Baloch said the main suspect s brother-in-law had also been arrested in connection with the killing.

Police said they had charged Haq with the murder. They did not offer proof of Haq s U.S. citizenship except for the suspect s own testimony and declined to say whether the U.S. embassy had been informed of the incident.

His family declined to respond to a Reuters  request for comment.