Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
It sometimes happened that the assassination did not follow, but preceded, the placing of the name on the list of the proscribed. One example shows the way in which these executions took place.
At Larinum, a town of new burgesses and favourable to Marian views, one Statius Albius Oppianicus, who had fled to Sulla's headquarters to avoid a charge of murder, made his appearance after the victory as commissioner of the regent, deposed the magistrates of the town, installed himself and his friends in their room, and caused the person who had threatened to accuse him, along with his nearest relatives and friends, to be outlawed and killed.
Countless persons--including not a few decided adherents of the oligarchy--thus fell as the victims of private hostility or of their own riches: the fearful confusion, and the culpable indulgence which Sulla displayed in this as in every instance towards those more closely connected with him, prevented any punishment even of the ordinary crimes that were perpetrated amidst the disorder.
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Reference address : https://www.ellopos.net/elpenor/rome/4-10-sullan-constitution.asp?pg=11