Authorities say five police officers were placed on paid administrative leave following the death of a man they were trying to arrest in southeast Washington state.
The Tri-City Herald reported 48-year-old Jose Mercado was fighting with family members and had a knife when someone called the police.
Police said officers responded to a domestic violence call and were confronted in the street by Mercado. Police said an officer used a stun gun on him after he refused to listen to commands and approached with closed fists.
Police said the stun gun was "ineffective" and Mercado attacked as additional officers arrived.
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The officers were able to place Mercado under arrest, at which point he became unresponsive.
Mercado, of Arlington, was given first aid and taken to a nearby hospital where he was pronounced dead.
The Washington paper reported an autopsy into Mercado's cause of death was inconclusive and that toxicology results will be received in a few weeks.
Sandra Zamora, identified by The Fort Worth Star-Telegram as Mercado's wife, told the paper in a telephone interview that her husband did not have a heart problem and that "the police did this to him."
The administrative leave is standard policy for police as a multi-agency unit investigates the death.
The Star-Telegram identified a GoFundMe page raising money for Mercado's funeral expenses.