You're a dark wizard who lost a battle for supreme power against three teenagers and a house elf. What's next?

Move to Singapore's most happening neighbourhood and harass the residents there for money, of course.

On Wednesday, Nee Soon GRC Member of Parliament Lee Bee Wah posted a letter from Yishun South Neighbourhood Police Centre on her Facebook page. In it, the police warns residents that some people have received letters signed off by one "Lord Voldemort".

The sender asked them to either urge a resident of a certain unit to "pay up", or else face harassment themselves.

You can see the Facebook post below:

"Date: 29 August 2017

Dear Residents

Police Advisory on Harassment Letters

The Police have received several reports where members of public have received letters in their mailboxes that were purportedly stamped as "URGENT" and signed off by "Lord Voldermort".

The sender had asked the members of public to inform a resident of Block [REDACTED] Yishun [REDACTED] to pay up or he would cause harassment to the house units.

The Police would like to advise members of public to take precautions when they receive such letters, especially from unknown parties.

A) Do not follow the sender's instruction.

B) Do not send any email reply to the sender's email address.

Instead, please lodge a Police report and hand over the letters to the Police.

If you wish to provide any information, please call the Police hotline at 1800-255-0000, or submit it online at www.police.gov.sg/iwitness.

Please be assured that your security is our concern and we will continue with our enhanced patrols at your block and its vicinity. Should you or family members spot any suspicious persons loitering at your block, please call Police emergency hotline '999'. Alternatively you may wish to call Yishun South NPC at 1800-852 2999 for assistance."

In case you can't see it, here's what her post says:

"Some residents have received letters that threaten to harass them. The letters are signed off by "Lord Voldemort"!

The police have put up an advisory at the notice board. they have also stepped up patrols. All residents, if you see suspicious characters loitering or harassing units, please take photos and videos of them and submit them to the police."

Who is Lord Voldemort?

Now, in case for some reason you aren't acquainted with the "Harry Potter" book and film series, Lord Voldemort is a character from it.

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Lord Voldemort was born Tom Marvolo Riddle at the Wool's Orphanage in London, England in 1926. His father Tom Riddle Sr was a wealthy Muggle, while his mother was a witch by the name of Merope Gaunt. Riddle's father abandoned the family before he was born, and his mother died in childbirth.

Riddle was educated at the Hogwarts School of Witchcraft and Wizardry, where he was sorted into Slytherin House. He worked for the antique company Borgin & Burkes upon graduation, and fell further into the Dark Arts as he sought the secret of immortality.

In 1970, Riddle started the First Wizarding War, calling himself Lord Voldemort (adapted from an anagram of his real name). He was finally defeated in 1981 after trying and failing to kill the infant Harry Potter.

In 1994, Voldemort returned to full strength with the help of his devotee Barty Crouch Jr. The Second Wizarding War lasted from 1995 to 1998. Voldemort killed notable wizards like Albus Dumbledore and Severus Snape until he was finally defeated in a duel by Harry Potter at Hogwarts.

From the above, it's very likely that the person delivering these letters in Yishun is not an evil wizard of any kind, especially since he or she misspelled the name as "Lord Voldermort" in the letter.

If you happen to receive one of these letters, there's no need to summon Dumbledore's Army. Contact the Yishun South NPC at 1800 852 2999 instead to report it.

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Top image via YouTube and Lee Bee Wah's Facebook page.