He was hospitalized under a false identity, planned a huge attack in Yosh. New details about the assassination of a Hamas operative in a hospital in Jenin - voila! news.
The Shin Bet began hunting for Mohammed Jalamana after he experienced a "work accident" with a car bomb he had prepared, and revealed that he was planning an attack on the scale of October 7. Jalemana and his associates took advantage of the sensitivity of the Israeli security forces for humanitarian issues, so they used ambulances.