The District's attorney general has dropped dozens of drunken driving cases since Jan. 31 and hundreds of others could be dropped as the police department shuts down its troubled alcohol breath-test program. Problems dating back more than three years with the city's breath analyzers were first revealed in February 2010, when it was discovered the machines' results were inaccurate. Since then, the D.C. medical examiner's office has refused to sign off on the accuracy tests of new analysis machines, officials said.

"The alcohol breath-analysis program? It doesn't exist anymore," said Ilmar Paegle, who discovered problems with the Intoxilyzer 5000s soon after he took over the city's breath-analysis program on Feb. 1, 2010. Paegle's contract ended last week. As he left, he said, the police department pulled off the street the Intoximeter, which replaced the Intoxilyzer last spring. "It's a royal mess," Paegle said.

A spokeswoman for D.C. Attorney General Irvin Nathan said he couldn't be pulled from a meeting to comment Tuesday. Nathan dropped eight more drunken driving cases Tuesday.