From CFN:
Father Nicholas Gruner, RIP
April 29: It is my sad duty to announce the sudden death of Father Nicholas Gruner
He died suddenly late today of a heart attack while working at his Fatima Center office.
At the moment, I do not know more than this. Please re-visit our page for updates.
And please remember Father Gruner in your prayers, a good friend and a true Catholic Crusader.
- John Vennari
O God, Thou didst raise Thy servant Father Nicholas Gruner to the sacred priesthood of Jesus Christ, according to the Order of Melchisedech, giving him the sublime power to offer the Eternal Sacrifice, to bring the Body and Blood of Thy Son Jesus Christ down upon the altar, and to absolve the sins of men in Thine own Holy Name. We beseech Thee to reward his faithfulness and to forget his faults, admitting him speedily into Thy Holy Presence, there to enjoy forever the recompense of his labors. This we ask through Jesus Christ Thy Son, our Lord. Amen.