OAKLAND -- A federal jury on Monday determined that two police officers were justified in shooting an unarmed barber to death as he slumped on a trash pile after a foot-chase in 2010.

One of the officers testified that he thought Derrick Jones had two different guns moments before the fatal shots, but no guns were recovered.

Jurors deliberated only a few hours before finding that officers Omar Daza-Quiroz and Eirbeto Perez-Angeles did not violate Jones' civil rights. The suit was brought by Jones' widow.

The officers had responded to a report that Jones had tried to strangle a woman when Jones fled. Daza-Quiroz told the jury he heard a gun hitting the street and skidding away as Jones ran. Moments later, he testified, he saw what he described as a gun in Jones' hand.

Jones was later found with a small meta scale in his pocket and a VHS tape box stuffed in his jacket sleeve.

His parents settled a similar suit against the city for $225,000 earlier this year.

Daza-Quiroz said he thought Jones was about to pull a gun when he shot him multiple times. Jones died at the scene.

The rare federal civil rights trial over alleged police abuses was interrupted often by tense exchanges between U.S. District Judge Yvonne Gonzalez Rogers and Ayanna Jenkins-Toney, the lawyer for Jones' widow, Lanell Jones.

Jenkins-Toney had tried to use the Oakland Police Department's years of abuses of citizens and its failures to comply with a decade of use-of-force reform efforts ordered by another federal judge, Thelton Henderson, as a contextual backdrop to the Jones shooting. Oakland Police, she said, "shoot first" and then create scenarios to justify it later.

But Gonzalez-Rogers limited Jenkins-Toney to only the fact of the Jones shooting in her case, not allowing the defendants' history of using force, including another shooting, to be presented to the jury.

Jenkins-Toney said early in the trial she hoped to appeal some of the judge's pre-trial rulings.

Jenkins-Toney also seemed at times to struggle early in her case as the judge called her questioning of Daza-Quiroz repetitive.

After Jenkins-Toney told jurors that the officers -- who were represented by an insurance company -- would not be personally responsible for any potential damages awarded, the judge threatened to declare a mistrial.

An attorney for Daza-Quiroz and Perez Angeles said during her closing arguments that the officers were simply doing their jobs and that Jones presented a legitimate threat given his actions.

"Daza-Quiroz was afraid, and he needed to protect himself and his partner -- and the public," said the attorney, Aimee Hamoy-Perera.

Staff writer Angela Woodall contributed to this story. Reach Thomas Peele at tpeele@bayareanewsgroup.com. Follow him at twitter.com/thomas_peele.