Long Island law-enforcement officials and the parents of two slain Brentwood girls will testify at Tuesday’s congressional hearing on the notorious MS-13 street gang that authorities have linked to 11 killings in Brentwood and Central Islip in the past year.

Rep. Peter King (R-Seaford) said the hearing’s first panel includes Suffolk Police Commissioner Timothy Sini, Suffolk County Sheriff Vincent DeMarco, Homeland Security Special Agent in Charge Angel M. Melendez and William Sweeney, the assistant director of the FBI’s New York field office. A Nassau police representative and an official from New York Attorney General Eric T. Schneiderman’s office also will participate in the hearing, King said.

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The hearing’s second panel will include Evelyn Rodriguez of Brentwood, whose daughter, Kayla Cuevas, 16, was killed in September, allegedly by MS-13 gang members; Robert Mickens, the father of Cuevas’ friend Nisa Mickens, 15, who also was slain last year in what authorities said was a gang attack, and Howard Koenig, superintendent of Central Islip schools.

The four-hour hearing will be held at the federal courthouse in Central Islip on Tuesday, beginning at 9:30 a.m.

King, the chairman of a Homeland Security subcommittee, said he called the hearing because he wants to know how the federal government can help Long Island address the MS-13 issue.