Texas has executed an inmate convicted of the drug-related killings of four people more than 30 years ago, including a woman who was 9-months pregnant. Arthur Brown Jr., 52, insisted he was innocent before receiving a lethal injection Thursday evening at the state penitentiary in Huntsville. He was condemned for the June 1992 slayings, which took place in a Houston home during a drug robbery. Authorities said Brown was part of a ring that shuttled drugs from Texas to Alabama and had bought drugs from Jose Tovar and his wife Rachel Tovar. Killed during the drug robbery were 32-year-old Jose...