Rajya Sabha Member Amar Singh and two former BJP MPs were on Tuesday sent to 14 days judicial custody. They have been arrested in the cash-for-vote scam.Earlier in the day, Amar Singh, and two former BJP MPs, Faggan Singh Kulaste and Mahbir Singh Bhagora were denied bail by a Delhi Court hearing the case. A police spokesman said that they have been taken to Tihar jail.All three were charge-sheeted by the Delhi Police in the cash for vote scam after the Supreme Court expressed displeasure over the probe in the case.