HESPERIA A man is fighting for his life after he was accidentally stabbed by cohorts one of whom was his brother when the trio attacked a Hesperia man Thursday night, according to San Bernardino County Sheriff's officials.


Kyle Lee Smither, 21, and Mark Edward Block, 29, both of Hesperia, were arrested for the initial attack, which took place a little before 7 p.m. in the 11000 block of 10th Avenue, Hesperia officials said.


Deputies and San Bernardino County Fire personnel received several 911 calls stating a man at the 10th Avenue location had just been attacked by three men and that the victim had his throat slashed, officials said.


As paramedics were working on the victim and setting up a landing zone to fly him to a trauma center, another call came in stating there was a second stabbing victim sitting in a vehicle on Fifth Avenue, just a short distance from the 10th Avenue address, according to fire authorities.


When rescuers arrived, they found the second victim in the vehicle along with Smither. The two were later found to be brothers, Sue Rose, spokeswoman for the Hesperia station, confirmed.


Paramedics rushed Smither's brother to the same landing zone where the first victim had just been airlifted when, according to witnesses, Smither's brother declined medically. One witness said several paramedics began to feverishly perform CPR on the injured man until they were able to revive him.


Instead of flying him out, Smither's brother was taken to a local emergency room, Rose said.


No further details on the condition of the stabbing victims were available Friday.


Several deputies, detectives and SMASH Gang Team members created a perimeter around both scenes and interviewed several people. Following the investigation, both Smither and Block were arrested, sheriff's officials said. Authorities have not released a motive in Thursday night's attack.


Authorities learned Block was a parolee at large and considered to be armed and dangerous. Court documents show Block has an extensive criminal record that includes past arrests for battery, assault with a firearm, robbery and taking a vehicle without the owner's consent.


Smither's record shows he has been arrested several times for a variety of drug-related crimes as well as brandishing a weapon.


Both men were booked into Victor Valley Jail for attempted murder, conspiracy to commit a crime and participation in a criminal street gang. They are each being held on $1 million bail.


This case is still under investigation. Anyone with information is asked to contact Detective Tina Kirby at the Hesperia station at (760) 947-1500 or call WeTip at (800) 78-CRIME.


Beatriz E. Valenzuela may be reached at (760) 951-6276 or at BValenzuela@VVDailyPress.com.