A mysterious illness that is spreading through the city of Houston has doctors and residents on edge.

It’s killing at least two people, and it’s spreading through a neighborhood and affecting thousands of people.

A man with a history of heart problems died last week in a Houston apartment complex, a police officer said Thursday.

The officer didn’t identify him, citing the investigation.

The man, whose name was not released, was a patient at a hospital, the Houston Police Department said.

It didn’t say if he was the patient.

A man who answered the phone at the Houston Health System said he didn’t have information about the death.

In Houston, there’s no shortage of residents who say they’ve seen or heard of mysterious illnesses.

But doctors and others are wary of drawing conclusions about whether it’s a virus, or whether the illness has caused more deaths.

The deaths have left people grieving and traumatized.

At a vigil Wednesday night, the Rev. Jesse Smith spoke of his friend, Daniel Garcia, who was struck by a car while walking home from the grocery store on Sunday.

His wife, Sandra Garcia, said she hopes his death will bring healing.

The couple’s 11-year-old son has been sick for several days.

He’s been in the hospital, too, and is in stable condition, Smith said.

The news spread through the neighborhood Thursday, with people asking questions about the illness.

One woman said she heard about the mysterious illness in the news, but she hasn’t seen it herself.

The city is investigating the cause of the mysterious death, which is not related to the coronavirus, said the Houston police officer who was not authorized to speak publicly on the case.

The hospital has not yet released the cause.