Pakistani police have opened a blasphemy case against a teenage Christian boy accused of sending derogatory text messages about Islam's prophet to neighbours in the southern city of Karachi.
Senior police officer Shahid Hayat said the 17-year-old is in hiding along with family members after neighbours angrily came to his house to inquire about the text messages.
Mr Hayat said the neighbours ransacked the family's home on Wednesday. He said the mob then lodged a formal complaint with police.
He said the boy told neighbours he forwarded the messages without reading them.
Opening such a case does not mean that the person is charged with a crime but that police are investigating. People convicted of maligning the prophet can be sentenced to death.