Manila, April 10 -- Philippine National Police chief, General Oscar Albayalde, on Wednesday ordered authorities to dig deeper in investigating the brutal killing of a 16-year-old girl in Lapu-Lapu City last month.

Albayalde, who is in Bohol for a command conference, said in a radio interview that he has ordered police probers to exchange notes with the National Bureau of Investigation (NBI) in solving the case.

He noted that he is closely monitoring every development of the case.

Meanwhile, Brig. Gen. Debold Sinas, chief of the regional police, said a 42-year-old man who reportedly confessed to the brutal killing of Christine Lee Silawan because of "obsession", is now considered a person of interest.

He, however, refused to identify the...