RICHMOND — A two-month investigation into activities at several hotel rooms led to the arrest of 25 people, police announced Tuesday.

The arrests were related to charges that included gun trafficking, drug sales and mail theft and fraud, according to Richmond police Lt. Eric Smith.

The Richmond Police Department’s Criminal Investigations and Special Investigations divisions opened the investigation in July, after police received information that rooms at the Marina Bay Inn & Suites were being used fraudulently. The hotel is located at 915 West Cutting Blvd.

The investigation showed that mail theft and fraud were going on at six rooms in the hotel, in addition to the drug sales and gun trafficking.

Police later found that some of the hotel’s occupants forced their way into rooms and were trespassing, Smith said.

Investigators obtained warrants for those rooms and others, and seized a credit card manufacturing machine, stolen mail and credit information, illegal narcotics, four handguns and an assault weapon.

Contact Rick Hurd at 925-945-4789 and follow him at Twitter.com/3rdERH