Uttar Pradesh's poor run with law and order shows no sign of abating. On Sunday, in a bid to keep a check on 'mischievous elements', the Uttar Pradesh administration deployed drone cameras in curfew-bound Saharanpur, a day after three people were killed and over a dozen critically injured in communal violence.Police officials said the situation in Saharanpur city was under control but tense, although there was no major incident of violence since late Saturday night.