very close behind sb/sth; very soon after sth :
News of rising unemployment followed hard on the heels of falling export figures.
very close behind sb/sth; very soon after sth :
News of rising unemployment followed hard on the heels of falling export figures.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005