What is the sentiment of this news? Please choose an answer from {strong negative/moderately negative/mildly negative/neutral/mildly positive/moderately positive/strong positive}.

Federal work-safety investigators are looking into the death of an Amazon worker and an injury that potentially led to the death of another employee, adding to a probe already underway following a third fatality during the company's annual Prime Day shopping event in mid-July.
mildly negative