The police have arrested Lord Hammah, a former student of the University of Ghana to help in investigations into letters threatening the lives of lecturers of the University.Deputy Commissioner of Police Patrick Timbila told the GNA that Hammah, an aspiring candidate in last year's SRC election was later arrested for his involvement in last week's demonstration against the University's new residential policy.DCOP Timbila said when the students of the University Ghana marched towards the Castle last week to present a petition to the President to protest the In-Out-Out-Out residential policy, Hammah was spotted around the 37 Military Hospital in a car by the demonstrating students and they made him to join them while he was no longer a student.He added that Hammah addressed the demonstrating students although he had no right to join the students. DCOP Timbila said Hammah was also picked to help in investigations into the letters being circulated on the University campus threatening lecturers.He said his men were on the ground to bring sanity on the University Campus.The Legon Police Command said on Thursday that was investigating a threat to the lives of lecturers and their families by a shadowy group which claims it is protesting the University's new residential policy of in-out-out-out that gives official residence to only the first year students.The Police have beefed up their strength at the Legon Police Command where Police water cannon, is among vehicles that have been brought.The Pro-Vice Chancellor, Professor Kwesi Yankah told the GNA that there was no trouble on the campus. "Everything is calm," he said, adding that there was no disturbance.He said examinations had started and the authorities would make sure that students writing their papers were protected. Prof. Yankah warned that any student who refused to write their examinations would be given Grade X.Students of the University of Ghana last week staged a demonstration to protest the decision of the authorities to change the present residential policy from in-out-out-in to in-out-out-out.The Government on Wednesday urged students of the University of Ghana to remain calm while government discusses their concerns about the new residential policy with the authorities with a view to addressing them.Source: GNA