KADUNA, Nigeria—Kidnappers have released the remaining 29 students they were holding captive on Wednesday, nearly two months after abducting them from a forestry college in Nigeria’s Kaduna state. Gunmen took 39 students from the Federal College of Forestry Mechanization in northwest Nigeria on March 11 and previously released 10 of them. The newly released students arrived at police headquarters in Kaduna city on Wednesday night looking weak, forlorn and wearing dirty, torn clothing. One female student could not walk alone and was carried into the building, while another was rushed to the hospital. Police did not allow journalists to speak to the students. More than 700 people have been abducted from schools in northwest Nigeria since December in a rash of kidnappings for ransom in the volatile region. Kaduna Governor Nasir El-Rufai has repeatedly said his state government will not negotiate with “bandits”, as the criminal gangs are known, or …