Thai Family Calls for Probe After Woman Detained in Japan Over Hidden Drugs

A young Thai woman's detention in Japan has her family calling for a deeper look into whether parcel couriers are being targeted by cross-border drug schemes.

Thai Family Calls for Probe After Woman Detained in Japan Over Hidden Drugs

Nonthaburi, Thailand — The family of a Thai woman arrested in Japan after authorities allegedly found crystal methamphetamine hidden inside a coffee packet in her luggage is urging Thai police to investigate what they believe may be an international drug trafficking scheme exploiting parcel couriers. The 28-year-old woman, identified as Juthathip Thongnoi, traveled to Japan on 11 July with her boyfriend Sarawut Klabdee and another companion. The group worked as couriers, transporting parcels for Thai customers living in Japan. The group departed from Bangkok's Don Mueang Airport on a Thai AirAsia flight and arrived at Fukuoka Airport on the morning of 12 July, where customs officials inspected their luggage.

A Courier Trip That Ended in Detention

Juthathip Thongnoi left Bangkok on 11 July aboard a Thai AirAsia flight from Don Mueang Airport, a secondary airport in the capital that serves many budget carriers heading to regional destinations. She traveled with her boyfriend Sarawut Klabdee and one other companion. The three arrived at Fukuoka Airport the following morning and faced immediate customs checks on their luggage.

Don Mueang has long been a common departure point for travelers making short-haul trips between Thailand and cities in Japan. The group carried nine parcels in total for various customers. Upon landing, airport authorities began examining the items each person had brought.

Juthathip was detained after officials allegedly discovered methamphetamine concealed inside a coffee packet among the goods she carried. The other two travelers were also questioned but later released.

The THIENTHIEN SHOP Line Service

Juthathip had run a Line group named THIENTHIEN SHOP since the previous year. The messaging app is widely used in Thailand for small business groups that connect service providers with customers. Through the group she offered parcel delivery between Thailand and Japan for a fee.

On 10 July a customer using the Line name "ing ing" contacted the group and asked them to carry a 12-kilogram package to Japan. The fee agreed was 3,600 baht, and the package arrived already sealed with heavy tape. The same customer had used the service once before in May, which reduced any suspicion at the time.

The group accepted the job along with eight other parcels for the same trip. All items were packed without further inspection by the couriers themselves.

Eleven Hours of Questioning in Fukuoka

After the discovery at Fukuoka Airport, all three travelers were held for questioning that lasted roughly eleven hours. Japanese authorities enforce strict rules on controlled substances, and any suspicion of drugs triggers lengthy procedures. Sarawut Klabdee and the third traveler were eventually released, while Juthathip remained in custody.

The Royal Thai Consulate-General in Fukuoka first contacted the family with limited information, stating only that a stimulant substance had been detected. On 22 July the family received a formal notice confirming that crystal methamphetamine had allegedly been found inside a coffee packet.

The consulate's role is to assist Thai citizens detained abroad by relaying official updates and helping with basic consular needs. The initial vagueness left the family uncertain about the exact nature of the allegation for several days.

A Mother Files a Police Report in Nonthaburi

Juthathip's mother, Kanyawee Fuengphian, went to Bang Bua Thong Police Station in Nonthaburi province after learning of the arrest on 22 July. She filed a formal report and provided investigators with security camera footage from her daughter's housing estate that showed the package handover.

The family noted that payment for the 12-kilogram parcel had come from a bank account under the name HO THI MAI. After the arrest, the customer "ing ing" stopped responding on Line and blocked all further contact. None of the other eight parcels caused problems, and every other customer collected their items without issue.

Kanyawee acknowledged that her daughter had not opened or checked the sealed package before departure. She maintained that Juthathip had never been involved with drugs in the past.

What the Family Wants Now

The family is asking Thai police to investigate the person behind the Line account "ing ing" and the bank transfer from HO THI MAI. They want authorities to determine whether the case connects to other recent incidents in which unsuspecting couriers carried packages later found to contain drugs.

They point out that the customer had used the service once before without incident, which made the job appear routine. The sealed nature of the parcel and the sudden disappearance after the arrest have raised their suspicions of a larger scheme.

While accepting that greater caution with future parcels would have been wise, the family insists Juthathip was simply earning money through legitimate delivery work. They hope the police investigation will clarify how the drugs came to be inside the coffee packet and whether others have faced similar exploitation.