If you've ever played Battlefield or Call of Duty online, then you know that matches can sometimes get a little heated. There's always that one guy who takes things a little too seriously and threatens to end your life when you beat him. Even so, the person in this case took sore loser to the next level.

The New York Post reports that a disgruntled gamer sent Long Island police to the home of a 17-year-old who had just beaten him in Call of Duty.

The prankster told police through Skype that his name was Rafael Castillo and told them, "I just killed my mother, and I might shoot more people," according to authorities.

Police immediately descended upon Castillo's house in Long Beach, bringing a SWAT team, several emergency vehicles and two choppers along with them. They arrived to find Castillo's mother alive and well in the kitchen.

"He told me, 'Go out! Go out!'" the mother told reporters at the LI Herald. "I [asked], 'What happened?' They said, 'Somebody killed somebody in your house.' I told the police my kid's home. My kid's on the computer. He don't know what happened."

Rafael's 21-year-old brother Jose also arrived home from the store, adding to the confusion.

"One of the police officers said somebody called and said that the mother and brother of somebody in this house was killed," Jose said. "I said, 'How is that possible if she's right there and I'm right here?'

Officers tried for 20 minutes to contact Rafael, but he was wearing a headset and unaware of the commotion outside. Eventually his brother was able to contact him, and he came out. Police quickly realized they had been pranked.

Police sources suspect that the anonymous perpetrator traced Rafael's IP address to find his home. He then sent police in an online griefing practice known as "swatting," costing law enforcement an estimated $100,000.

"If we determine who made this call, there will be an arrest," Long Beach Police Commissioner Michael Tangney said. "He did something so, so foolish and so dangerous. I'm very angry — it's a tremendous waste of taxpayer resources. It's a tremendous danger to law enforcement."