The section of the Dangerous Dogs Act under which two women have been arrested relates to allowing a dog to enter a private property where it is not permitted and the animal then injuring a person.
In March, a 14-year-old girl died after she was attacked by a pack of dogs at a house in Greater Manchester.
Jade Anderson was savaged by up to five dogs at a house she was visiting in Chaucer Grove, Atherton near Wigan. The animals were shot by police.
More top news
Around 31 people are still thought to be missing after the boat sank on a reservoir near the city of Medellin.
Bins were set on fire and objects were thrown at officers as protesters demanded justice for the death of Edir Frederico Da Costa.
Patients are being left "belittled and bewildered" as medical staff try to deal with overstretched systems, the BMA will warn.