Heads will roll at city morgues.

The ghoulish morgue employee who posed for a series of creepy photographs playing with the cadavers under his care is now under investigation by the Staten Island district attorney after The Post exposed his stomach-churning antics, according to a law-enforcement source.

Kaihl Brassfield, a $35,000-a-year mortuary technician who held a severed human head in classic Heisman Trophy pose for a camera, faces possible charges of official misconduct and making false statements to investigators.