Cases from 1999 include criminal investigations, trials, and notable events that occurred during the year. Whether they involved new charges, breakthroughs in cold cases, high-profile trials, or tragic incidents that captured national attention, the cases documented here reflect the state of the criminal justice system in 1999. CaseSleuth provides detailed, chronological coverage of each case with timelines, evidence breakdowns, profiles of key people involved, and links to primary sources and media coverage.
2 cases found
On April 20, 1999, seniors Eric Harris (18) and Dylan Klebold (17) carried out a mass shooting at Columbine High School in Columbine, Colorado, killing 12 students and teacher Dave Sanders and wounding 23 others before dying by suicide. The attack, planned for roughly a year and originally conceived as a bombing, became a watershed moment in American history that transformed school safety protocols, law enforcement response to active shooters, and the national gun control debate.
Adnan Syed was convicted in 2000 of the 1999 murder of his ex-girlfriend Hae Min Lee in Baltimore, Maryland. The case gained global attention through the 2014 Serial podcast and a 2019 HBO documentary. In September 2022, a judge vacated his conviction citing Brady violations and unreliable cell tower evidence. Charges were dropped in October 2022 after DNA testing excluded Syed. However, the Maryland Appellate Court reinstated his conviction in March 2023 over victim family notification rights, a decision upheld by the Maryland Supreme Court in August 2024. In March 2025, a judge resentenced Syed to time served plus probation under the Juvenile Restoration Act, allowing him to remain free despite his conviction standing.