Bought a Mobile

Hello Respected Sir/Madam I have Bought a mobile Phone from a person who lives near to my house but i did not knows his proper location. I was using the mobile . But on 3rd May police called me and asked me to come to police station to determine two numbers. On 4th may i had gone to police station. Policemen asked me that which mobile are you using . I replied that i am using the same phone. Then policemen told me that this mobile is under theft report. I shocked. i told the police that i had bought it from a person and named the person. But policemen warned me to go to jail because i had bought a theft mobile. But i did not know that this was a stolen phone. I give the detail to policemen of that person which i had bought the mobile. Policemen threatened me many times that i have to go to jail . But i requested that i am not thief then they leave me and warned me that if i will not get informed about the thief within two days and give arrested him they will arrest me instead off. Sir i give contact no. of person which sold me the mobile. Now i am Afraid what should i do now?