A 34-year-old man from Stevenage has been arrested following an alleged dog attack in the town.
At about 10.20am today three women were walking their dogs along Kimbolton Crescent when a Staffordshire Bull terrier-cross reportedly attacked one of their animals.
It later died.
A woman was also bitten but police said her injuries were not thought to be life threatening.
The dog accused of attacking both the other dog and woman has been seized by police.