West Bengal Chief Minister Mamata Banerjee today claimed that there is an attempt to suppress the reasons for the railway accident in Odisha and the CBI is being used to cover up the lapses as victims' families are asking questions. "I thought I won't say this, but the situation has forced me to say it. Such a huge accident has occurred. There is an effort to cover up the lapses. The families who've lost everything want answers. They want the true information to come out," she alleged.