Monday marks four weeks since Vilet Torrez, a Miramar mother of three, was reported as missing.
"Ever since last night I've been thinking a lot about her," said her sister Nayiva Blanco.
Early Monday, a handful of law enforcement agencies from three different counties gathered at state canal C9. Detectives and cadaver dogs spent the day searching the canal.
"They are trained to find the odor and the alert to it when they smell it. The odor, when it's underwater is gases and rises to the top and they can smell," said Juliana Martinez from the Palm Beach County Sheriff's Office.
Vilet Torrez was reported missing by her estranged husband Cid Torrez, but Miramar Police wouldn't say whether they were searching for her.
Her sister said she was alerted by someone who saw the search on the news.
"I got a call from one of her friends telling me that they were searching for her at a canal and it kind of hit me really hard because I know it has been a month but you don't want to lose hope. And when you hear stuff about canals, nothing good comes out of that," said Blanco.
Police suspect foul play and have named Cid Torrez as a person of interest.
The canal search started at around 8 a.m. and ended just after 3 p.m. Miramar police said they will resume a similar at a different location weather permitting.