Virginia Governor Timothy Kaine has stayed the execution of a man who killed a police officer pending a U.S. Supreme Court ruling on lethal injections.

Kaine delayed Edward Nathaniel Bell's execution, scheduled for one week from today, until July 24 to give the high court time to make its ruling.

It's the second Virginia execution and one of 30 nationally delayed by the Supreme Court's deliberations over whether lethal injections are constitutional as a means of execution.

The death sentence of Virginia death row inmate Christopher Scott Emmett, scheduled for last October, was also stayed pending the court review.

The 43-year-old Bell was convicted in 2001 of shooting Winchester police Sgt. Ricky Timbrook to death in October 1999.