TUNIS — A Tunisian official says that about 12 people have been detained in the investigation into a massacre at a beach resort that killed 38 people, mostly British tourists. Tunisia's Radio Mosaique reported Thursday that Lazhar Akremi, a senior official with the ruling Nida Tounes party, made the announcement at a party meeting. The report did not elaborate on when or where the arrests occurred. The Tunisian government is holding a news conference Thursday morning in the capital Tunis about the investigation into Friday's attack. — AP