COLLINGDALE, Pa., (CBS) – The search for clues continues into what happened to Delaware County mother, Melissa Rodriguez (see related story).

Collingdale Police hauled a work truck from North Jersey as part of their ongoing investigation on Monday night. Eyewitness News is told it belongs to Melissa’s husband, Jose, who works for Amtrak.

“This is a truck assigned to him. We want to do some investigations on any GPS and things in the truck and go from there,” said Collingdale Police Chief Robert Adams.

Police say her husband, Jose Rodriguez, last spoke to Melissa on Friday, April 19th.

According to her husband, Rodriguez told him she was heading to Newark, N.J. to stay with friends for the weekend.

Rodriguez is described as a Hispanic female, 5’5”, 130 pounds, with brown hair and brown eyes. She was last seen wearing a yellow flowered dress and glasses.

Police say Rodriguez made contact with her friends in Newark on April 19th around 12 p.m., and she said that she would be staying at their house for the weekend. Her friends say they were expecting a phone call from her around 3 p.m. on April 20th to pick her up, but they never heard from her.

Rodriguez’s vehicle is parked at her residence in Collingdale.

Police say they spoke to family members, friends and work associates and they all have not seen or spoken to her since last week.

Anyone with information is asked to contact either the Collingdale Police at 610-586-0502 or Delaware County CID at 610-891-4700.