SAN JOSE -- Police have arrested four men and three juveniles on suspicion of murder in connection with the gang-related beating death earlier this year of a 14-year-old San Jose boy at Roosevelt Park.

The most recent arrest occurred on Oct. 12, when the San Jose Police Department's Covert Response Unit arrested Angel Garcia Lamas, 20, of San Jose, in connection with the murder on April 27 of Heriberto Reyes, who was an eighth-grade student at Bernal Intermediate School in South San Jose.

The other arrests occurred on Sept. 26, Oct. 2 and Oct. 10, according to police.

Officers first arrested Javier Hernandez, 20, of San Jose, along with three juvenile suspects on Sept. 26, according to police. Officers then arrested James Conklin, 18, of San Jose, and Scott Conway, 19, on suspicion of murder.

Police did not release the ages of the three juvenile suspects.

On April 27 just before 7 p.m., police say a fight broke out at Roosevelt Park in downtown San Jose, a known gang hangout. Police say Heriberto was targeted and attacked by several suspects and died three days later from those injuries.

Heriberto previously attended Davis Intermediate School, which is in the Oak Grove School District.

Police have revealed few details about the crime.

The encounter involved several people in the park, located between Julian and Santa Clara streets, just west of Highway 101, police said previously. During an altercation, Heriberto was beaten and then taken to the hospital with severe injuries. He was pronounced dead at 2:23 p.m. on April 30.

Police won't say what Heriberto was wearing at the time or why he could have been targeted. The park and the school he attends are located in different areas of town.

Contact Mark Gomez at 408-920-5869. Follow him on Twitter.com/markmgomez