A heating system at a building in Lawrence, Massachusetts, sent a number of people to the hospital Thursday, officials said.
The Lawrence Fire Department initially called the problem a gas leak at the building on Lawrence Street near the Hayden Schofield Playstead, saying multiple people were taken to the hospital. A firefighter on the scene said at least 11 people were hospitalized.
Lawrence police characterized the issue as a carbon monoxide leak, and Eversource said in a statement that the issue was a heating system, not a gas leak.
"We responded and made the building safe and will work with authorities as needed," the Eversource statement said.
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A chicken restaurant was taped off at the scene. The restaurant has apartments above it.
