This is the first article that suggests that some operatives were in the country for a longish period of time and perhaps were involved in other assisinations, past and-or planned. Many of them fled after the hit, but perhaps planned to return when the dust settled. Now they can't thanks to the Dubai police investigation.
In Bahrain, 2 police officers killed, 6 wounded in bombing (AP)
from the article: Will the Dubai hit increase Israel's global isolation?