PITTSBURGH — Pope Benedict XVI has appointed a priest from Harrisburg to be the new auxiliary bishop of the Roman Catholic Diocese of Pittsburgh.

The Rev. William Waltersheid, 54, will be ordained a bishop on the day after Easter, April 25, at St. Paul Cathedral in Pittsburgh.

An auxiliary bishop is an additional bishop assigned to a diocese to assist the bishop in administering the diocese. Bishop David Zubik has headed the Pittsburgh diocese since September 2007.

AVELLA — State investigators have confirmed that fumes escaping from a storage tank ignited, causing a Western Pennsylvania Marcellus gas well fire that injured three workers — but they still don't know what caused the fumes to catch fire.State Department of Environmental Protection spokeswoman Katy Gresh says the contractors were doing maintenance work when fumes from one of five 500-barrel storage tanks caught fire, causing the other tanks to explode about 6:15 p.m. Wednesday at the Chesapeake Energy Corp. drilling site in Avella.