An Essex town is in “huge shock” after a grandmother was killed by dogs, suspected to be XL Bullies. Esther Martin, 68, was declared dead at the scene in Jaywick, near Clacton-on-Sea, Essex, on Saturday afternoon. The family of the grandmother has said the dogs were believed to be XL Bully dogs. Investigators are yet to confirm the exact breed of the dogs. A 39-year-old man who was arrested on suspicion of dangerous dog offences remains in custody. The animals have been destroyed. Sonia Martin, 47, said her mother, a grandmother of eight and great-grandmother of three from Woodford Green in Lo…