Harrisburg police want residents to be on the lookout for individuals offering to sell home security systems door-to-door.
During two recent incidents, police say an individual threatened homeowners with a stun gun.
Joy Frederico, of the 2100 block of Berryhill Street, said the scary incident played out in her living room Tuesday evening.
Frederico said a woman came to her front door and offered to set up a home security system. Frederico declined and closed her door.
Moments later, she said the woman entered her living room screaming obscenities and holding a stun gun.
"I started yelling for her to get out of my house, get out of my house," Frederico said.
The woman finally left when she heard dogs barking.
Harrisburg police said they are investigating a similar incident that happened Wednesday evening on nearby South 19th Street.
Police Chief Pierre Ritter said a woman offering to sell home security systems presented what may have been a stun gun and made threats.
Authorities believe the two cases are connected. They want residents to be on the lookout and to use caution when opening their doors to strangers.