Wiktionary
on the heels of
alt. 1 (context idiomatic English) In close pursuit of; close behind. 2 (context idiomatic of events, facts, etc. English) Closely following; in succession immediately after. prep. 1 (context idiomatic English) In close pursuit of; close behind. 2 (context idiomatic of events, facts, etc. English) Closely following; in succession immediately after.
Usage examples of "on the heels of".
Hard on the heels of that resolve the elevator doors hissed open, and she found herself staring at several obviously irritated hotel guests.