More legal issues for the two men accused of playing a role in the mysterious deaths of three Kansas City Chiefs fans last year … TMZ Sports has confirmed they’ve just been sued.

Court records we obtained show Jon Harrington filed a wrongful death lawsuit against Jordan Willis and Ivory Carson in Missouri on Friday … just days after authorities alleged the two contributed to his son David Harrington‘s death by supplying him with a lethal mix of drugs at a ’24 Chiefs watch party.

The lawsuit states the get-together took place on Jan. 7, 2024 … at Willis’ Platte County home.

Jon is asking for unspecified damages.

Willis and Carson were both jailed last week after officials said their actions at the party not only led to David Harrington’s death, but also Clayton McGeeney‘s and Ricky Johnson‘s.

Wendy Williams is at Lenox Hill Hospital in New York City for an independent examination as to whether her cognitive functions are sufficiently intact to end her guardianship.

Sources with direct knowledge tell TMZ … a caregiver not associated with the guardianship — Gina Monterroso — ordered the trip and the test … this after the NYPD paid a visit to Wendy Monday morning to determine if, as Wendy says, she’s effectively being held prisoner.

The NYPD has asked about Wendy being confined to the memory unit of the assisted living facility, where she cannot leave the floor without permission. She rarely gets out.

In addition to NYPD, Adult Protective Services has launched its own investigation into the guardianship. They interviewed Wendy’s niece, Alex Finnie, Monday.

New York authorities have launched two separate investigations into the circumstances surrounding Wendy Williams‘ guardianship … TMZ has learned.

Sources connected to Wendy tell TMZ … Wendy just had an interview with Adult Protective Services, which also has made phone calls to people close to Wendy, asking about her living conditions in a New York assisted-living facility.

As TMZ reported … Wendy is locked on the 5th floor in the memory unit, where she cannot leave the floor without approval from an attendant. Numerous people connected to Wendy say she has no memory problems, and therefore, keeping her in that memory unit is inhumane.

We’re told Adult Protective Services called Wendy’s niece, Alex Finnie, asking a slew of questions relating to the various restrictions that have been placed on her in the guardianship.

In addition to APS, police paid a visit to Wendy at the facility, as part of a welfare check. An NYPD patrol car was parked outside the building on Monday morning.

Wendy, through people close to her, has asked both the NYPD and Adult Protective Services to launch an investigation into the guardianship.