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Zookeepers called off the dogs, but one wouldn’t respond, and police had to shoot him, Ms. Baker said. The dogs are about as big as medium-sized domestic dogs, 2 to 2½ feet high and 37 to 80 pounds, according to the zoo.

TEXAS

FBI asked to probe helicopter shooting

McALLEN — Texas state police have asked for a federal investigation of a chase in which a trooper fired on a fleeing pickup truck from a helicopter, resulting in the deaths of two Guatemalan immigrants who were hiding in the bed.

The Texas Department of Public Safety has said troopers believed drugs were hidden under a sheet in the truck’s bed when the shots were fired during the pursuit. Instead, nine Guatemalans were in the truck, including six under the sheet, and a 14-year-old driver.

DPS Director Steve McCraw said in a statement Friday that he had asked the FBI and U.S. Justice Department’s Civil Rights Division to investigate the incident. The Texas Rangers, an elite unit within DPS, had led the investigation of the shooting. Mr. McCraw said they will turn over their completed investigation and evidence to federal authorities.

From wire dispatches and staff reports