Thiruvananthapuram: Stung by the CPI(M) raking up its past Congress connection, the CPI in Kerala today hit back at the senior partner saying it would be better to refrain from digging up the past as both the parties had backed the Congress at one time or the other.

Launching a broadside at its ally over some local issues that strained their relations, CPI(M) state secretary Pinarayi
Vijayan had yesterday said CPI still had the hangover of its past Congress connection.