Not timely; done or happening at an unnatural, unusual, or improper time; unseasonable; premature; inopportune; as, untimely frosts; untimely remarks; an untimely death
If you describe an event as untimely, you mean that it happened earlier than it should, or sooner than you expected. His mother's untimely death had a catastrophic effect on him = premature
You can describe something as untimely if it happens at an unsuitable time. an untimely visit from the milkman I am sure your readers would have seen the article as at best untimely. = ill-timed