Supreme Court requires lab analyst testimony
Posted: Thu Jun 25, 2009 2:10 pm
The U.S. Supreme Court ruled on Thursday that crime lab reports used in drug and other cases can be introduced as evidence at trial only if defendants can cross-examine the forensic analysts who prepared them.
By a 5-4 vote, the high court ruled a defendants' constitutional right to confront witnesses against them extended to reports of forensic analysis, such as those showing the material seized by the police was cocaine.
Prosecutors use lab reports in thousands of cases each year involving illegal drugs, fingerprint identifications, blood alcohol tests and DNA evidence. Jurors most often just get the reports with any testimony by the analysts who prepared them.
About 20 states now give defendants some right to cross-examine lab employees about forensic evidence. The ruling came after recent scandals at major crime laboratories about shoddy work and errors.
The ruling involved a drug case from Massachusetts. Luis Melendez-Diaz was convicted of trafficking in cocaine partly on the basis of a crime lab analysis that certified that cocaine was in plastic bags found in the car in which he was riding.
The trial judge rejected objections from defense lawyers who argued the analyst who prepared the report must be called to testify about the testing method, how the evidence had been preserved and other issues.
http://www.reuters.com/article/domestic ... 8G20090625
By a 5-4 vote, the high court ruled a defendants' constitutional right to confront witnesses against them extended to reports of forensic analysis, such as those showing the material seized by the police was cocaine.
Prosecutors use lab reports in thousands of cases each year involving illegal drugs, fingerprint identifications, blood alcohol tests and DNA evidence. Jurors most often just get the reports with any testimony by the analysts who prepared them.
About 20 states now give defendants some right to cross-examine lab employees about forensic evidence. The ruling came after recent scandals at major crime laboratories about shoddy work and errors.
The ruling involved a drug case from Massachusetts. Luis Melendez-Diaz was convicted of trafficking in cocaine partly on the basis of a crime lab analysis that certified that cocaine was in plastic bags found in the car in which he was riding.
The trial judge rejected objections from defense lawyers who argued the analyst who prepared the report must be called to testify about the testing method, how the evidence had been preserved and other issues.
http://www.reuters.com/article/domestic ... 8G20090625