NEW DELHI:

(TMC) supremo and

chief minister

, upset with railway minister

's Railway Budget proposal hiking passenger fares, wrote to Prime Minister

on Wednesday asking him to sack Trivedi. She also wrote to the PM asking him to replace Trivedi with another TMC party member

.

"Yes, I have written to the Prime Minister seeking his replacement with Mukul Roy, another union minister," Banerjee told news agency PTI.

Earlier, Mamata Banerjee had rejected the proposed hike in railway fares as anti-poor, anti-people and asked the railway minister to rollback the fare hike immediately. However, in interviews later in the afternoon and evening, Dinesh Trivedi showed defiance to his own party's wishes and put his 'country before the party'.

The

, US-educated Trivedi, 61, found himself in a piquant situation immediately after he presented his maiden Railway budget in which he proposed an across-the-board hike in passenger fares to mop up an additional Rs 4,000 crore for spending on railway safety. On a cue Mamata Banerjee party MPs attacked the hike and demanded a rollback in keeping with her populist politics which has resulted in repeated trouble for the UPA government over issues such as FDI in retail and petrol price hike.

Mamata followed up with a public declaration that she will not not allow the fare hike. She complained she had not not been consulted by Trivedi, which he confirmed. It appeared for some time that the minister may

a compromise with his party by rolling back the hike in lower class fares while leaving the upper class fare increase untouched.