One man is dead and a sheriff’s deputy is injured after a standoff that all started with an argument about doughnuts, police said.

Pinellas County deputies were called to a home in St. Petersburg on Wednesday after an argument broke out between a Jeffrey Falsey, 24, and his mother, police said.

"He went off today over doughnuts, something as silly and stupid as doughnuts," Pinellas County Sheriff Bob Gualtieri said, the Tampa Bay Times reported.

During a standoff, Falsey fired off at least 30 rounds at deputies, squad cars and neighboring homes, hitting a deputy in the leg, FOX13 reported.

A SWAT team and a negotiator were called to the scene to talk to Falsey, who then surrendered, FOX13 reported.

After the shooting stopped, deputies found Daniel Kulwicki, 68, the fiancee of Falsey’s mother, dead inside the house, the Times reported.

Police said Falsey has a history of mental illness and a previous arrest for domestic violence, and also said Falsey was upset that Kulwicki, a registered sex offender, was living in the home.

He was charged with murder, attempted murder and aggravated assault.

Read more at the Tampa Bay Times.