One man died and six people were hurt, including two suspects, when a homemade methamphetamine lab exploded inside a nursing home in Ashtabula, Ohio, authorities say.

Update at 3:41 p.m. ET: WKYC-TV reports that dead man has been identified as Shaun Warrens, 31, of Ashtabula. Police said he was neither a resident nor employee of the Park Haven Nursing Home.

Two other suspects who were burned are expected to be charged.

The Associated Press reports that police believe two visitors and one Park Haven resident knew about the meth lab, Police Chief Robert Stell told the Star Beacon of Ashtabula.

Original post: One person was killed and six injured when a homemade meth lab exploded at a nursing home in Ohio this weekend, WKYC-TV reports.

"It's a first," Ashtabula Fire Chief Ron Pristera said of Sunday night's fire at Park Haven Nursing home. He described the meth operation as a "pop bottle, shake-and-bake lab."

Once the smoke cleared, and investigators found the burned out meth lab in one room, they were stunned, Cleveland's Fox8 TV reports.

"When we first started to get the indications, we all sort of looked at each other and went, 'You know, are we seeing what we think we're seeing?'" Pristera told Fox8.

The Park Haven nursing home has only a one-star rating out of five in the 2009-2011 ratings for more than 15,000 U.S. nursing homes from the Centers for Medicare & Medicaid Services. State records show Park haven was cited for 18 violations last year, including not providing adequate care, the Associated Press reports.

Pristera said the man who died was among three residents and two non-residents taken to a hospital. Two others were treated at the scene.

One of the injured was a pregnant nurse who helped several people flee the building, WKYC reports.

A sprinkler system contained most of the fire.

Methamphetamine is a highly addictive illegal stimulant with flammable components often cooked in homes. State officials said more than 300 meth labs were broken up last year.

A lawyer for the nursing home, which houses about 40 people, declined to comment, the Associated Press reports.