Watch out if you plan on filing a race discrimination complaint against FDNY — you just might find a noose hanging in your locker. At least that's what Gregory Seabrook, a communications electrician for the department, says happened to him last Thursday.

In December Seabrook, an employee of FDNY for almost 20 years, filed a race discrimination complaint alleging that the fire department snubs minorities on overtime and promotions. Four others filed similar complaints in October. Then last week, Seabrook found a noose tied in a three foot long "monkey knot" hanging in his work locker in Brooklyn. An FDNY spokesman told the Daily News he doesn't know anything about it.