REDWOOD CITY -- Two suspected Peninsula gang members videotaped themselves threatening to kill and using a loaded pistol magazine to rough up the approximately 5-year-old son of a rival, a prosecutor said Tuesday. Wilbert Ard, 26, and Dwayne Anthony Henry, 20, appeared in San Mateo County Superior Court Tuesday for a hearing on a range of charges that include assault with a deadly weapons and making threats, but it ended being delayed to April 15, said District Attorney Steve Wagstaffe.

The suspects, who were parole, were arrested in February by Menlo Park police because they were allegedly together and it's a violation of their parole or probation terms. Police searched Ard's cell phone and found the video of the suspects pushing "a very young boy," who appeared to be 3-5 years old, said Wagstaffe.

Both suspects have pleaded not guilty. They defense attorneys didn't immediately respond to requests for comment.

The video also allegedly shows the suspects using the loaded, 30-round magazine to push the boy's head. During the clip the suspects threaten to shoot the boy and his father, who is part of a rival gang. At one point a suspect loads a bullet into a gun and threatens the child with the weapon, Wagstaffe said.

Authorities haven't identified the boy or his father but have some leads, said Wagstaffe. It wasn't immediately clear how the men ended up with the boy.

Ard and Henry are being held at the San Mateo County jail in lieu of $250,000.

Contact Joshua Melvin at 650-348-4335. Follow him at Twitter.com/melvinreport.