Definition: Generate an appropriate title for the given text. The generated title must be short and include the main topic of the text. The preferred titles are under fifteen words.
Input: Nottinghamshire Police said officers were called to Old Park Close, Bilborough, at 15:45 GMT on Sunday following reports the alleged victim had been threatened with a gun. The force said it was trying to establish the circumstances surrounding the reports. The three suspects, aged 19, 20 and 24, remain in police custody. Officers are appealing for anyone with information to come forward. Follow BBC East Midlands on Facebook, Twitter, or Instagram. Send your story ideas to eastmidsnews@bbc.co.uk.

Three arrested on conspiracy to kidnap boy, 15, in Bilborough