. . . class acts like this:

The NYPD’s Internal Affairs Bureau is investigating a cruel prank call to the family of Sean Bell’s fiancée that originated from the Manhattan offices of a prominent police union, The Post has learned.

“Ha, ha, ha,” someone said in a 1:15 p.m. Friday phone call to the home of Nicole Bell’s father Les Paultre, according to a police source.

The number for the Sergeants Benevolent Association came up on the caller ID.

. . .

The president of the union, Edward Mullins, said, “If the accusations are true, we will deal with it.”