No suit or action to recover any duty under section
1592
(d),
1593a
(d) of this title, or any pecuniary penalty or forfeiture of property accruing under the customs laws shall be instituted unless such suit or action is commenced within five years after the time when the alleged offense was discovered, or in the case of forfeiture, within 2 years after the time when the involvement of the property in the alleged offense was discovered, whichever was later; except that—