Four suspected autolifters hailing from Manipur have been arrested, and 13 high-end cars and SUVs, including a BMW, was recovered from Delhi and Imphal, the police said in New Delhi on Wednesday. The gang used to tamper with the chassis number of the stolen vehicles and then sell the cars by getting them re-registered from different district transport offices in Manipur, DCP(South) Romil Baaniya said. A team of Anti-Auto Theft Squad (AATS) of south Delhi district police was working to bust the gang for sometime.