An NBC News investigation has found that the US Dept. of Housing and Urban Development does not require carbon monoxide detectors in public housing, despite a mounting death toll caused by the gas.

An @NBCNews investigation has found that the US Dept. of Housing and Urban Development does not require carbon monoxide detectors in public housing, despite a mounting death toll caused by the gas. https://t.co/cpWqGUAxIr

— NBC Nightly News with Lester Holt (@NBCNightlyNews) March 3, 2019