Mukesh Kumar’s career-best figures of six for 32 helped Bengal thrash Bihar by an innings and 204 runs in a Ranji Trophy Group-B fixture to end its campaign on a positive note and give its captain Manoj Tiwary a fitting farewell at the Eden Gardens here on Sunday.

Bengal pace duo of Mukesh and Suraj Jaiswal wreaked havoc in favourable conditions as Bihar, beginning its second innings from 32 for one, was all out for 112 well before the lunch break on the third day.