The Associated Press reports:

House leaders have announced plans for a bipartisan congressional prayer service on Wednesday to mark the weekend shooting that left Rep. Gabrielle Giffords of Arizona gravely wounded and six others dead.

Speaker John Boehner and Democratic Leader Nancy Pelosi say in a letter to lawmakers it is important to gather together and pray for the health of Giffords, those who died in the attack and those who were wounded.

Giffords was shot in the head on Saturday when a gunman opened fire with a semi-automatic pistol while she greeted constituents outside a Tucson, Ariz., grocery store.

Among the dead are an aide to Giffords, a federal judge and a nine-year-old girl.

A 22-year-old man, Jared Loughner, faces federal charges in the episode, with state charges also expected to be filed.