Three foxes were shot in "absolutely shocking" and "disturbing" attacks last week, London's Metropolitan Police said.
Anyone in the UK with a credit card and an internet connection can buy one in minutes.
Ramanodge Unmathallegadoo is accused of murdering Devi Unmathallegadoo after she left him for another man.
Lee Atkins was shot by David Ball with the weapon in Bootle, Merseyside.
Medics were unable to save Devi Unmathallegadoo, but her baby was delivered by emergency Caesarean and survived.
Mystery surrounds deaths of 53-year-old man and two women aged 33 and 30.
Gerald Corrigan, 74, was shot on April 19, with the bolt narrowly missing his heart.
The 74-year-old suffered "horrendous, life-changing injuries".
Devi Unmathallegadoo was shot the abdomen as she attempted to flee. Her unborn baby survived the attack.
“He did not waste a second. He seemed like he had training.”
Ramanodge Unmathallegadoo was allegedly armed with two crossbows.
Exclusive: Police commissioner makes plea after he reveals how easy it was to purchase
A 13-year-old boy allegedly armed with a knife and a crossbow has killed a teacher and injured at least four pupils at a
A man has died after being shot with a crossbow at his home. Darrell Farnham, 44, was found at the house in Aylesbury, Buckinghamshire
A man with a crossbow at the centre of an armed siege has been arrested. Police negotiators were dispatched to resolve the
A man armed with a crossbow is at the centre of an armed siege, police have said. Police negotiators are working to resolve
The RSPCA are hunting a 'crossbow killer' responsible for spearing at least 10 hedgehogs and lining up three of their carcasses