Michelle Gildernew has hit out at those behind a hoax bomb alert at her home.
Police carried out searches around the Fermanagh/South Tyrone MP's house yesterday afternoon after claims a device had been left there.
It followed a telephone warning to the Sinn Fein office in Dungannon by a caller who said he hoped the device exploded while Ms Gildernew was in the house.
The PSNI later confirmed the alert had been a hoax.
Ms Gildernew, a mother-of-three, said it was worrying that people would even consider targeting her family.
However, the MP, who has represented the constituency since 2001, vowed she would not be deterred by the threat.
"Targeting my home, in which I have three small children, is a despicable thing to do. Thankfully nothing was found," she said.
"Threats like this will only make me more determined to continue to represent the people of Fermanagh and South Tyrone and push ahead with my work within Sinn Féin.
"I and the rest of my colleagues in Sinn Féin will not be intimidated from our work by threats of this sort.
"While it is worrying that someone would target my family, they will not succeed in deflecting me from my work."
Sinn Fein MLA Phil Flanagan said his thoughts were with the Gildernew family. "I'm sure she won't allow such events to intimidate her from her work representing us all," he said.
A PSNI spokesman said nothing suspicious was found.