Shebin and his father, absconding soon after the incident on April 14, were taken into custody from a lodge in Palani and brought here this morning, police said.
A case under IPC section 307 (attempt to murder) has been registered against the youth, while his father has been charged with helping him escape and destroying evidence, police said.
Shebin, alleged to be a drug addict, had dragged the woman, a B.Com student, into his car as she was returning from a temple, and tried to stab her with a knife and glass piece, police said.
Hearing her cries, some people nearby, including women, rushed to her help when they were also knocked down, resulting in serious injuries to two of them.
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The accused had abandoned his car soon after the incident and was absconding along with his father.
Police said at least 30 relatives of the accused have been questioned since the incident took place. The father-son duo were nabbed with the help of cyber cell by tracking their mobile location.