A jury found Elizabeth Holmes guilty of conspiring to defraud investors in failed blood testing start-up Theranos, delivering a victory to federal prosecutors in one of Silicon Valley’s most high-profile criminal fraud cases.

The jurors also convicted Holmes of three counts of wire fraud and conspiracy to commit wire fraud, while finding her not guilty on four further counts. They were deadlocked on three remaining charges. Holmes can appeal against the verdict in state appeals court.

Jurors read out their decision following a dramatic day of deliberations at a federal courthouse in San Jose, California. Earlier, Judge Edward Davila had instructed the jury to continue their deliberations after they said they could not reach a unanimous verdict on all of the charges.