From Longman Dictionary of Contemporary Englishclose on the heels of somethingclose on the heels of somethingvery soon after something elsecome/follow close on the heels of something Yet another scandal followed close on the heels of the senator’s resignation. → close
Examples from the Corpus
close on the heels of something• With another couple of laps he might have finished close on the heels of the two Dunlops. 