Four people have been shot dead and eight others injured in separate incidents of gun violence in the United States over the past two days.
A police officer, serving a warrant in downtown Seaside, Oregon, was shot dead on Friday night. The unidentified officer was 39-years-old and had been with the Seaside Police Department for 13 years.
A second officer returned fire and hit the suspect, police said.
In another incident on Saturday morning in Florida, one person was killed and seven others were injured after a mass shooting at a club.
Ruth Cate, a spokesperson for the Tampa Police Department said all the victims suffered gunshot wounds, but said details about the extent of the victims’ injuries were not yet available.
He said a possible suspect or motive was not yet known, but police remain at the scene conducting an investigation.
"The name of the deceased will not be released until the identity can be confirmed and the next of kin can be notified," he added.
In Florida, police also killed a man, Blake Fitzgerald, suspected in a series of robberies and kidnappings in an early morning standoff on Friday morning. His accomplice, Brittany Harper, was taken to hospital with gunshot wounds to her legs.
In another incident, police officers shot dead a mentally-ill individual described by US media as a transgender woman whom they said was trying to commit suicide on Thursday.
They killed Kayden Clark after arriving at her home in Arizona over a call claiming she was threatening to kill herself, said a police spokesman.
The officers entered Clark’s home, but they were reportedly forced to shoot her when she attacked officers with a knife.
Her mother, however, said, "They shot and killed a 24-year-old autistic, mentally-ill individual whom they had been familiar with and were aware of her special needs."
She said, “Before police arrived she wasn't posing a threat to the community at all. And the police came into her own place.”
According to the Virginia Center for Public Safety, more Americans have been killed as a result of gun violence than all US wars since 1963.