The plot reportedly began when Brobbey was approached by Jeymon A., a notorious Antillean-Amsterdam criminal known in the underworld as 'Piccalo'. On the night of December 17-18, 2022, A. met with Brobbey at a concert at Valhalla - a music festival. A. asked Brobbey to step aside for a private conversation, claiming that "Moroccan criminals from Utrecht" were looking for him. A. assured the Ajax star that he had already solved this fabricated problem, subtly suggesting that a "generous compensation" would be a reasonable exchange.
When Brobbey didn't adhere to A.'s demands, a series of planned attacks began. On the night of 15 January 2023, heavy fireworks were thrown through the letterbox of Brobbey's mother-in-law's house. Two months later, on the night of 18 March 2023, an explosive detonated in Brobbey's car, and his sister-in-law's car was set on fire a month later.