Rene Hernandez,arrested after an undercover drug buy in October

Kenneth Gross said Framingham Police could have arrested his client, Rene Hernandez, after an undercover drug buy in October, but instead continued to buy drugs from him to get more significant charges."I'm arguing entrapment," said Gross. "They (police) like to bring more serious charges. They weren't satisfied with one transaction. They kept going back to him for more."Judge Douglas Stoddart told Gross police did "nothing illegal," and Gross agreed."My hat's off to the Police Department for manufacturing charges that put the defendant in a tough position with these charges," said Gross. "They could have stopped after the first transaction."Police arrested Hernandez, 35, on Friday at 3:15 p.m. after a months-long investigation, prosecutor Coli McMahon said.Undercover officers made at least five separate cocaine purchases from Hernandez between October and January.On Friday, they made one more purchase, and arrested him, McMahon said.When police searched him, they found 18 small plastic bags containing more than 14 grams of cocaine hidden in Hernandez's underwear, the prosecutor said.Hernandez, of 153 Grove St., was charged with trafficking in cocaine, distribution of cocaine, conspiracy to violate state drug laws and a school zone violation.McMahon argued for $10,000 bail, saying that Hernandez is facing a "significant" jail or prison sentence, including two years minimum if convicted of the school zone violation.Gross argued for $200 bail.Stoddart set bail at $7,700.If Hernandez does not make bail, he'll be held at the Middlesex Jail in Cambridge. He is due back in court on April 26 for a pretrial conference.