THANE: A 20-year-old drug addict and his minor aide were arrested within 24 hours of allegedly robbing a Mumbai resident of his phone and cash on the Kalyan skywalk, on wee hours of Sunday. The 23-year-old victim, a Lower Parel resident, was on his way home, after meeting a friend in Kalyan when the duo robbed him at knife point near the Kasara-end of the skywalk connecting the station. The accused were allegedly under the influence of a narcotic substance. The victim managed to escape and approach the police, said Shardul Valmik, senior inspector at the Kalyan railway police. The main accused was remanded to police custody while the minor has been detained, informed constable MR Kute.