THIRUVANANTHAPURAM: A habitual offender was arrested by the Thiruvananthapuram Rural District Anti-Narcotics Special Action Force (DANSAF) with 815g MDMA at Chirayinkeezhu here on Thursday. Kadinamkulam native Muhammed Shafi, who had been under the police scanner lately, was arrested by 8.25 pm, along with the substance he had brought for sale. Trying to evade police checking, the accused avoided using vehicles and came to Chirayinkeezhu on foot.