A judge has ordered that James Holmes suspected of killing 12 people in a cinema shooting in Aurora, Colorado, should stand trial.

Judge William Sylvester found that prosecutors had established there was “probable cause” to believe James Holmes committed the crimes.

“Therefore the court orders that defendant shall be bound over for trial on all counts,” he wrote in a 61-page ruling posted online.

The 25-year-old has been charged with 166 offences following the shooting during a showing of The Dark Knight Rises in July.

Holmes will be formally charged, alhough his lawyers have said he is not ready to enter a plea.

He could face the death penalty if convicted.

A promising neuroscience student, Holmes began to stock up on weapons, ammunition, explosives and combat gear in the spring of last year.

He began to see a university psychiatrist and then dropped out of his course.

The Aurora rampage was one of a number of mass shootings in the US last year, culminating with the killings at Sandy Hook Elementary School in Connecticut, which have raised the issue of gun control.

A review ordered by President Barack Obama is due to report back within weeks, but the gun lobby has signalled it will oppose new restrictions.

[adrotate banner=”54″]