A British teenager is admitting to launching a series of false terror threats, targeting schools and airports in West Michigan and other parts of the U.S.

We've been following the case of 17-year-old Gregory Sales, known on Twitter as "Ransom" for more than two years.

Sales admitted guilt in a court in the United Kingdom, according to the newspaper the Liverpool Echo.

Several local high schools, Ford International Airport, Kalamazoo/Battle Creek International Airport and multiple television stations were targeted with threats prompting evacuations and grounded flights.

Local school districts affected include Coopersville, Hudsonville, and Allendale schools.

The incidents happened consistently over approximately a 6-month period.

Deputies told us last year that "Ransom" met up with a 13-year-old from Coopersville online and that's, in large part, how the "swatting" incidents began.

In an interview the teenager did with WZZM 13 last year while this was happening, he told us he was making these threats because it was fun.

The Liverpool Echo reported that the boy's age prevented him from being extradited to the United States to face criminal charges here.

Sales has yet to be sentenced.