A man has been arrested in eastern France in connection with a series of violent attacks on horses, according to French BFM TV.
Police said earlier on Monday that two people suspected of killing and mutilating the horses had escaped a manhunt.
Police launched a major search operation in the eastern Cote d'Or area -- involving 40 officers and a helicopter -- after a horse owner near Dijon spotted the pair on his pasture on Saturday night.
The killings in question involve the mutilation of the animal’s bodies.
They are often found with an ear cut off, an eye gouged out and genitals cut away. No meat is ever taken from the carcasses.
Remy Marchal, a French farrier, had his horses attacked.
"On August 21, around 11 a.m, I came out and found two wounded horses. One had a laceration on its right posterior. The second horse, which is no longer here, went back to its owners with a hole on his backside, which we think was done with a screwdriver. On top of that, at the end of July, we found a pony with a punctured eye right by here."
Police have published a facial composite of one male suspect.
Authorities say they have no idea what motivates the attacks -- adding that it could be a satanic rite, a gruesome trophy hunt, or an internet challenge.
In August, there had been about 10 cases across France since the start of the year.
And despite intense media attention, the killings and mutilations have increased in recent weeks.
French media have reported 20 killings.
For now, police are advising horse owners to monitor their meadows daily, install cameras if possible, and report any suspicious behavior.