The arrest of Law Minister Jitender Singh Tomar was the "beginning of the end" of the AAP government in Delhi, the BJP said on Tuesday.
"The case was very clear from the first day but (Chief Minister) Arvind Kejriwal turned a blind eye and let him (Tomar) continue as a minister," Delhi BJP president Satish Upadhyay told reporters.
"Today is a black day in the democratic system of Delhi when a minister has been arrested, and only the chief minister is responsible for it," the Bharatiya Janata Party leader added.
Upadhyay also criticised the Delhi government for failing to appoint a Lokayukta.
"The appointment is not possible during Kejriwal's tenure because in the last four months the misdeeds of his ministers and legislators have increased so much that every day a decision against one of them will be delivered," he said.
Tomar was arrested on Tuesday over his alleged fake law degree.