Sonoma County sheriff's deputies arrested a man Thursday afternoon in connection with what they called an unprovoked machete attack a day earlier that hospitalized a man with serious stabbing and slashing wounds.

Adam Jordon Faustino, 32, of Santa Rosa was taken into custody without incident around 1 p.m. in his truck in the parking lot of the Sonoma-Marin Fairgrounds in Petaluma, Sgt. Carlos Basurto said.

He was booked into Sonoma County Jail late Thursday with a bail of $1 million on suspicion of attempted murder and violating probation.

Detectives were seeking Faustino in connection with the attack on Alan Evans, 35, on Wednesday in a house on Hall Road near Willowside Road, west of Santa Rosa.

Faustino is suspected of assaulting Evans after an argument at Evans' home. The two acquaintances were inside the house for some time after the argument when Faustino suddenly began slashing at Evans, Basurto said.

It wasn't clear what the earlier argument was about, but the attack "was unprovoked," Basurto said.

Faustino, a transient believed to be living out of his pickup, fled before passers-by reported seeing a bloodied man — Evans — walking on the road, authorities said. Evans had numerous wounds and underwent emergency surgery Wednesday night. He was expected to survive, officials said.

Faustino was known to Evans' family, Evans' mother said, but was an unwelcome visitor to the house and had been asked to leave on at least one prior occasion. He stopped by the house unexpectedly Wednesday and was alone with Evans when the attack occurred shortly after 1:30 p.m., authorities said.

Faustino was scheduled to appear in court on Monday. It was unclear what crime he was serving probation on.