Sergey Mamontov, Nostrand Murderer, Threw Victim’s Fingers Into Sheepshead Bay’s Waters

Officers prepare to transfer Mamontov from the 61st Precinct to Central Booking.

Mom always told me not to get too close to the swans in Sheepshead Bay. She said they look pretty, but they can take your fingers off if you get too close. Well, mom, if they like fingers, they got a free meal some time last week.

Sergey Mamontov, the 50-year-old Nostrand Avenue resident suspected of killing his roommate, has confessed to detectives, telling him that he not only killed the man on March 25 for being too noisy, but chopped him up, attempted to dissolve the remains in bleach, and tossed his fingers into the waters of Sheepshead Bay.

“He was very matter of fact,” a police source told the Daily News. “He didn’t want to say anything at first, but once he started talking, he wouldn’t shut up. He said he decided there was no other way to take care of (the victim).”

The victim has been identified as Aleksandr Zilbergleyt.

Mamontov was transferred from the 61st Precinct to Central Booking last night.