"Reno approved the use of tear gas to flush the Branch Davidians from their compound outside of Waco, Texas. Unfortunately, it did not go as planned; a fire erupted and more than 70 Davidians (including Koresh and at least 20 children) died during the event. Reno publicly took responsibility for the outcome, saying on television: "I am accountable. The buck stops with me." "
https://www.biography.com/law-figure/janet-reno
The original raid that started the siege happened on February 28th, with Reno only taking office on March 12th.