Texas executes inmate convicted of killing a police officer

AUSTIN, Texas (Reuters) - A man who was in a group of seven inmates behind one of the biggest prison escapes in Texas history was executed on Wednesday for taking part in the murder of a suburban Dallas police officer on Christmas Eve 2000, a prisons official said. Donald Newbury, 52, was pronounced dead at the state's death chamber in Huntsville at 6:25 p.m. CST after receiving a lethal injection. He was the 521st person executed in Texas since the U.S. Supreme Court reinstated the death penalty in 1976, the most of any state. (Reporting by Jon Herskovitz; Editing by Sandra Maler)