A Baltimore Police Department homicide detective has been suspended amid allegations that he used his badge while off-duty to force his way into homes and search for his daughter who had run away, according to law enforcement authorities and sources.

The detective, Daniel Thomas Nicholson IV, had been the lead investigator on the case of Phylicia Barnes, a teenager from North Carolina who went missing in Baltimore. The search for her, which led to her body being found in northern Maryland, became a national story.

Baltimore police spokesman Anthony Gugleilmi confirmed that Nicholson has been suspended and is also the subject of a criminal investigation by the city State's Attorney's Office. The spokesman declined to comment further on details.

Baltimore County police also confirmed that they had been investigating a missing person's report in reference to Nicholson's teenage daughter, but said that she called authorities on Monday and indicated she had returned home and was safe.

But police sources with knowledge of the case, along with another person affiliated with law enforcement, said that the detective went on his own search, and that is the reason behind the investigation.

Nicholson's attorney, with the police union, declined to comment Tuesday.