A man made arrangements to sell methamphetamine in Brownwood Saturday night, then drove here from Fort Worth, met up with the buyer and closed the deal: $500 for 8.5 grams, police alleged.

The “buyer” was actually Brownwood narcotics detective Bruce Spruill, who’d been in touch with the man by telephone for the past three weeks, Spruill said Monday.

Police arrested Ruben Sambrano, 35, of Fort Worth, on a charge of manufacture and delivery of a controlled substance, Brown County Jail records state. Sambrano remained jailed Monday in lieu of $100,000 bond.

Spruill said police believe Sambrano had been supplying large amounts of methamphetamine to the Brownwood area. He said he began calling Sambrano to talk about a drug deal in Brownwood. He said he learned Sambrano’s name through another investigation.

Saturday afternoon, the two talked by phone and Sambrano said he would arrive in Brownwood in a Saturn station wagon, Spruill said in a report. They made arrangements to meet in a parking lot in the 300 block of East Commerce.

Wearing a body wire that was monitored by sheriff’s deputies, Spruill met the man at 9:30 p.m. The man got in Spruill’s pickup, and Spruill asked the man if “he had the stuff,” Spruill’s report states.

The man sold Spruill a bag that contained “a crystal-like substance” and said the substance was methamphetamine, Spruill’s report states.

Spruill gave the man $500 for the bag. “I then asked him if he would bring me some more on Monday, and he said he would bring me whatever I wanted,” Spruill’s report states.

He estimated the transaction took about 10 minutes. “I drive away, and he drives away behind me,” Spruill said.

The man drove into Early on Early Boulevard, and a Brownwood patrolman stopped Sambrano’s car. He was arrested without incident, Spruill said.