The New York senator and Democratic presidential candidate said she planned to cut short a rally in Fort Worth, Texas, in order to visit the officer's family, as well as call the police chief to express her sympathy.
"This reminds us once again what the men and women in law enforcement do every single day," Clinton said. "It is important that we respect and appreciate their service. I certainly am grateful for all they do for me and, more importantly, they do for the citizens of cities like Dallas and across the country. I just want to express my deepest condolences to the family and the Dallas police department for this tragic, tragic accident."
Dallas police spokesman Sgt. Gil Cerda said he had no details on the crash, which happened shortly after 9 a.m.