The government of Thailand faces the challenge of strengthening its gun control measures, following last month's deadly rampage at a childcare facility.

Sunday marks one month since a former police officer armed with a gun and a knife attacked a childcare center in northeastern Thailand on October 6. He killed 36 people, including 24 children.

Mourners continue to visit the site of the incident to leave sweets and other items in memory of their loved ones.

Local people remain worried that similar incidents may happen again, and victims' families are still struggling to come to terms with their loss.

One man lost his 3-year-old grandson in the attack. The boy lived with his grandparents as his parents worked at a factory outside their hometown.

The grandfather said he was a cheerful boy who loved singing and dancing, and that he still couldn't believe what had happened.

He added he misses him, and he had looked forward to seeing his grandson growing up.

The Thai government is stepping up efforts to tighten gun control measures.

People seeking gun licenses are now required to take psychological tests. The government also plans to have them undergo other mental evaluations after obtaining the licenses.

But the challenge is whether effective measures can be taken, as an enormous number of guns are already in circulation in the country.

A Swiss research institute says that Thailand had more than 10 million privately-owned guns as of 2017. In the capital Bangkok, there is a district lined with shops selling guns.

People aged 20 or older can legally buy guns if they prove they have a stable income with no criminal records. Lower priced guns sell for 30,000 baht, or about 800 dollars.

An illegal gun trade is also said to be rampant in the country.

When searching for "illegal guns" on social media, one can find many posts that list prices. One post offers a gun priced at around 95 dollars.