A teenage boy who planned to kill his ex-girlfriend went to the 15-year-old's home and shot dead her mother and two young siblings instead, homicide investigators have alleged. Police in Texas said the unidentified teenage girl was not physically harmed after her ex-boyfriend, also 15, went to the apartment complex in Odessa which she shared with her mother and siblings just before 6pm on Tuesday. 'We've seen that in Odessa before - evil does visit us from time to time,' Odessa Police Chief Mich