This technique is the absolute key to suspense. Pique people’s curiosity and then make them wait for a resolution. While they’re waiting, introduce a new tantalizing question, and then delay that answer too. Once you can layer these successfully, you’ve got a page-turner. The famous author Pete Hamill told me once that writing suspense is about planting diving boards and then jumping off them later. Best advice I ever got.
Go forth and good luck!