The announcement was made by New Castle County Police, who along with the Attorney General’s office have been leading the investigation of the apartment complex near Wilmington.
The New Castle County Department of Land Use and the state Department of Natural Resources and Environmental Control are assisting with it still describes as a criminal investigation.
DNREC has jurisdiction over the boiler that it is being investigated as the possible source of a carbon monoxide leak that is widely suspected as the cause of the tragedy. The county also regulates apartment complexes through its land use department.
Building F and Building G remain evacuated, pending replacement of the boiler, land use officials said.
“Our thoughts and prayers remain with the families of all who were affected by this tragedy,” Timothy Mullaney Sr., the county’s chief administrative officer, said Friday. “Except to say that everyone deserves safe housing, the county will not comment further until the investigation has been finished.”
Evergreen a family owned apartment management company that specializes in properties for those with low and moderate incomes.
The New Castle-based company has been making upgrades on its apartment projects, including Riverfront Heights.
Evergreen acquired the former Canby Park apartment complex in 2015.