A urine test taken shortly after the alert showed a negative result for alcohol, said Holley.
An L.A. district attorney spokeswoman wasn't aware of the negative test result. The DA's office office previously said the alert was "an alcohol-related violation." It remains unclear what triggered the device. Holley also denied that Lohan tampered with the bracelet.
Lohan, 23, remains free on $200,000 bail – a new amount which the judge set in her case on June 8 after the SCRAM alert. Lohan remains subject to weekly random drug testing and must abstain from alcohol.
The actress still faces a probation violation hearing on July 6. She could get up to six months in jail if a judge determines that she hasn't fully complied with her probation terms.
E! Online was first to report on the negative alcohol test.