Published: Sep 20, 2011 2:49 AM EDT
Updated: Sep 20, 2011 3:28 AM EDT

FORT MYERS, Fla. -- The mystery continues behind the shooting deaths of a Fort Myers couple.  Family members found the bodies of a man and a woman in a home Friday night.  WINK News is learning more about the couple after talking with neighbors and taking a look into their past.

Fort Myers police are asking for information in this case.  The man and woman are Lisa Collins, 21, and her boyfriend Steven Rios, 35.  Rios has a criminal history several pages long including felony possession for heroin.  Neighbors of the couple said they kept to themselves and were shocked to hear the news.
"It was just this scream I had never heard before," said Rhonda Herring, a neighbor.

Herring lives around the corner from where two people were found dead inside their home Friday night.

"We were getting ready to go get a soda and I just heard this blood curdling scream," said Herring.

The scream came from a family member of Collins and Rios.  Fort Myers police said a family member of the two found the couple inside their home at 4030 East River Road shot to death.

"I was just scared and felt really bad for the family," said Herring.

Investigators said they're treating the case as a double homicide.  A police report said Collins and Rios were the only two found inside the home and Rios was Collins' boyfriend.  There were also no signs of forced entry.  WINK News tried to speak to family at the home where the homicide happened but no one answered.  It's believed other people are living in the home after a sign was put up on the front door asking people not to knock after 11 p.m.

Pieces of crime scene tape are still around the fence at the home where two people were found shot to death inside.  People that live in the neighborhood said even though they didn't know the couple very well, they were still shocked to hear what happened just doors down from where they live.

"I felt really bad but then when I found out the male and female were so young, I really was upset," said Dare Nielsen, a neighbor.

"Something like this would never happen around here.  I don't know, it just didn't seem real," said Penny Krystosek, a neighbor.

Back at Herring's house, she's keep a close eye out, wondering who could have committed such a crime.

"In the back of my mind I'm worried because its scary knowing that happened in your neighborhood," said Herring.

There are no suspects in custody and investigators don't have any people of interest.  They're asking if you have any information on this case, call the Fort Myers Police Department or Crimestoppers.