Armed police have demanded residents stay in their homes as they hunt for dangerous dogs on the loose after two men were attacked.
Avon and Somerset Police confirmed armed officers are in the residential areas of Bristol looking for the beasts.
People have been told to avoid the area, while anyone who sees any sign of the dogs should call 999.
Officers were called after two men were attacked and taken to hospital.
A spokesman for Bristol Police said: “Officers on patrol were flagged down by two males in Bishport Avenue, Hartcliffe, at approximately 10.50am this morning and reported being wounded by two dogs.
“Police officers, including armed officers, have carried out proportionate enquiries in the Hartcliffe area throughout the afternoon to try to find the dogs but those searches have proved negative.
“Trained dog-handlers remain in the area but other resources have resumed patrols.
“The two men who were injured have attended hospital for treatment.
“At this time we would like to reassure the public we have received no other reports today of injuries relating to these two dogs.
“However, enquiries are ongoing to identify their owners and would ask anyone with information to call 101 and give reference number 5222090677.
Its Twitter account added: “Officers are currently dealing with an incident involving two aggressive dogs.
“As a precaution we advise unaccompanied children avoid the area at this time.
“We're grateful for the public's patience while we've been dealing with an incident involving dogs in Hartcliffe. Two men were wounded by dogs and have attended hospital.
“Enquiries are ongoing to identify the dogs' owner(s)”
One concerned resident said: “I’m not against the breed- but if these dogs are behaving dangerously they need catching now.”
It comes days after a mum said her three-legged dog was viciously attacked by a possible pitbull , l eaving her too scared to take him and her puppy out for walks.
Barbara Walker was in a field throwing a ball to her dogs when she spotted another mutt that she says looked like a pitbull leave its owner and come charging over.
The mum-of-two said she quickly picked up her five-month-old puppy and at which point the stranger's dog went for her pooch, Marley.
The dog was muzzled so unable to bite Marley, but was jumping on top of him, leading Barbara to "knee" it in the head in an effort to stop the attack.
Marley ended up with two cuts on the side of this body, she said, but thankfully escaped serious injury.
