Updated

Prosecutors say a Virginia man who planned a mass killing at the Washington headquarters of a conservative Christian lobbying group should spend 45 years in prison for his plot.

Prosecutors filed a court document Friday recommending the sentence for Floyd Corkins II, who pleaded guilty to three charges in February. A security guard subdued Corkins in the lobby of the Family Research Council in August after he pointed a pistol at the man. The guard was the only one injured. Corkins later told authorities he planned to kill as many people as possible and to smear Chick-fil-A sandwiches on their faces as a statement.

Chick-fil-A was making headlines at the time because of its president's stated opposition to gay marriage. The Family Research Council also opposes gay marriage.

Sentencing is set for April 29.