FAIRBURY, Neb. -- Authorities said a dog was put down following an attack on Saturday. 

The Jefferson County Sheriff's Office said that on June 17 around 12:12 p.m., they got a 911 call for a violent dog attack that was actively happening in the 1000 block of Ash St. in Fairbury. 

When deputies arrived, they said they found a male and female outside of the residence, both of whom were covered in blood. 

The Sheriff's Office said that also at that time, the male was actively fending off the dog with a shovel. 

JCSO deputies said they were told that the dog had already attacked another dog from the residence, and three people were there. 

It was reported that the dog was showing aggression towards everyone that was within his vicinity. 

Authorities said that due to the aggression shown by the dog, the home owner's request, and the serious bodily injury it had caused another dog and the three people, the dog was put down. 

The Jefferson County Sheriff's Office said a deputy was the one who put the dog down. 

Officials said they determined that the male and female lived at the residence with the dog that had harmed them. 

The Sheriff's Office said that both the male and female had serious injuries that required medical treatment. 

Another male in the residence was found to have also been seriously injured by the dog while he was visiting, according to authorities. 

The visitor was reportedly injured in the face and arms, also requiring medical treatment. Authorities said the man eventually had to be taken to a hospital in Omaha for surgery. 

JCSO said they took the dead dog to the University of Nebraska in Lincoln for rabies testing, with results coming back negative. 

The Sheriff's office said they were helped by the City of Fairbury Ordinance Officer and the Jefferson County Ambulance District #33.