A Utah couple were arrested Friday after police say they traveled to Boise to sell a pound of heroin.

Jaime Alonso Lopez-Barraza, 25, and Kimberly J. Acosta, 21, are in the Ada County Jail and their one-month-old child is in state custody after a DEA task force investigation that began when police were told that Lopez-Barraza was a heroin dealer, the Boise Police Department announced Friday night. The couple were booked about 5:15 p.m.

An undercover officer contacted him on Thursday and arranged to buy heroin on Friday, according to the Ada County Sheriff's Office.

The two arranged to meet in a parking lot on South Federal Way, where Lopez-Barraza was arrested when he arrived about 2 p.m., according to the sheriff's office.

Lopez-Barraza and Acosta were booked into jail on felony drug trafficking charges and are to appear in 4th District Court in Boise Tuesday.

Police said they rarely see only a few ounces of heroin being traded at a time.

"We are happy to get it off the street," Ada County sheriff's Sergeant Detective Steve Robinson said in a news release.