 TUCSON, Ariz. AP - The mayor of Tucson, Arizona, said Thursday that the citys police chief should stay in his job, even as criticism mounts over the death of a young Hispanic man while handcuffed in police custody. Mayor Regina Romero, a Democrat, said Chief Chris Magnus should not resign because he has improved the police department since he took charge four years ago. Chief Magnus has brought forward-thinking changes to department policies, practices and trainings, and has built strong relationships with our community, Romero wrote. Magnus offered his resignation during a news conference on Wednesday in which police showed video of the April 21 death of 27-year-old Carlos Ingram-Lopez. The death wasnt made public until this week, and Magnus was heavily criticized for failing to disclose it earlier. Ingram-Lopezs family and friends plan to speak at a vigil later Thursday and call for accountability, a thorough investigation and an end to police brutality. Ingram-Lopezs case has sparked outrage as protesters around the country decry police brutality. A hashtag for ayudame, nana- help me, grandma has circulated widely to bring attention to some of his last words as he pleaded for help. Online tributes for Ingram-Lopez show a glowing new father with a baby girl; there are pictures of a young Ingram-Lopez dressed as a pumpkin for Halloween and others showing him blowing out candles on a Mickey Mouse cake. Ingram-Lopez died while handcuffed, face-down and covered with a thin blanket after police responded to a call from his grandmother, who said he had been acting erratically at her home. The medical examiners office didnt determine a manner of death but said Ingram-Lopez died of sudden cardiac arrest while intoxicated by cocaine... 