LOWELL -- Police are searching for three men who forced their way into a Richmond Street home on Saturday afternoon, stealing cellphones while holding five residents at gunpoint, police said.

Officers were called to 6 Richmond St., between Central and Lawrence streets in the Back Central neighborhood, shortly after 2 p.m., to investigate a report of a home invasion.

Officers arrived and spoke with a 19-year-old man who said he was sitting in his living room when the three men forced their way into the home. One man pulled a silver handgun and demanded the 19-year-old and four other residents hand over their cellphones, according to police.

Once the suspects had the phones, they ordered the home's residents to lay down on the floor and then ransacked the home while demanding both cash and marijuana, according to police.

The suspects escaped with the phones and an undetermined amount of cash.

All three suspects were described as being black men. Two of them wore black hooded sweatshirts, while the man who brandished the gun wore a gray sweatshirt.

Residents of the home were between 17 and 35 years old. No one was hurt.

Anyone with information is asked to call Lowell police at 978-937-3200 or Crimestoppers at 978-459-TIPS (8477).

Tipsters can remain anonymous, but can receive up to $1,000 for information leading to an arrest.

Follow Robert Mills on Twitter and Tout @Robert_Mills.