The break in the Di Lauro case came on the heels of a murder earlier in the day by one of his associates, Salvatore Tamburrino. Tamburrino, 40, showed up at police headquarters with his lawyer to confess he had shot dead his wife, Norina Mattuozzo, 33, after she refused to return home with him.
Her body had been discovered at her parents' home in Naples, where she had gone to live with their two children, aged 14 and 7.
But in the hours that lapsed between her death being reported and Tamburrino deciding to turn himself in, there was what Naples chief of police Antonio De Jesu described as "sudden and feverish" blizzard of activity that allowed detectives, using wiretaps and other intelligence techniques, to home in on Di Lauro's location.
Marco's father Paolo Di Lauro was head of the Camorra clan that controls drug trafficking in the poor Naples neighbourhoods of Scampia and Secondigliano, not far from the apartment where Di Lauro was living. His family was involved in a bloody power struggle in 2004 known as the Scampia feud, in which at least 130 people were killed.
The Italian Prime Minister, Giuseppe Conte, and Interior Minister Matteo Salvini both tweeted congratulations for the joint police-Caribinieri operation to capture the "super fugitive".