Follow CBSPHILLY Facebook  | Twitter

UPPER DARBY, Pa. (CBS) — Police in Upper Darby have uncovered a scam that targets seniors, involving vacant homes and cash deliveries. Police believe those behind it could be stealing money from victims all over the country.

READ MORE: CBS3 Pet Project: How To Help Your Dog, Cat Get Through Fourth Of July Fireworks

Police have discovered victims in a least three states that fell for the same telephone scam, and they believe many more seniors may also have fallen for it.

Police: Around 20 Arrests After Hundreds Of Dirt Bikes, ATVs Take Philly Streets In Memory Of ‘Dirt Bike Rell’

Police arrested 38-year-old Richard Otoo at a vacant home at 429 Woodcliff Road on Saturday. Upper Darby Police Superintendent Michael Chitwood believes Otoo is part of a sophisticated telephone scam.

“The people who are being scammed get a call from somebody who pretends to be a DEA agent and they’ll talk about their grandson, their son, their daughter being arrested for drugs and they’re currently in jail and they’re in bail and they need $6,000, $8,000, $10,000 for bail money,” explained Chitwood.

Upper Darby Police discovered the scam after getting a call from New York State Police, notifying them of a victim who shipped cash to the Woodcliff Road address, and asking Upper Darby Police to see who picked it up.

READ MORE: Philadelphia Police: Body Found Tied Up, Shot Inside Trunk Of Burning Car In Fox Chase

“Sure enough, the package is delivered by a FedEx driver,” said Chitwood.

Otoo was arrested after he arrived to pick up the package containing $6,000.

“Subsequently, we search his house and inside his house are three FedEx envelopes — one contains $9,500, the other contains $9,500 and the third one contains $9,000, so that’s $28,000, plus the $6,000, so we got $34,000 that we recovered,” said Chitwood.

State Employee Claims She Was Sexually Assaulted By Man Who Went On To Work In Gov. Murphy’s Administration

Chitwood believes this investigation could reveal many victims of the same scam.

“Hopefully we can get to the bottom of this ring, which I believe is very sophisticated,” said Chitwood.

MORE NEWS: Philadelphia Weather: Remainder Of Fourth Of July Weekend Looks Great

As a result of the investigation, police believe at least $400,000 has been sent to various locations in Upper Darby since July. If you or anyone you know may have fallen victim to this scam, contact police at 610-734-7693.