INDIANAPOLIS — Chris Mullin wasn’t kidding when he said his plan was to hit the ground running.

In the three days since the St. John’s legend was announced as the program’s new coach, Mullin and assistant coach Matt Abdelmassih have burned up the phone lines, touching base with a number of local coaches from New York City and New Jersey, and extending several scholarship offers.

They have been extremely active on a number of fronts: High school prospects that range from seniors to freshmen, junior college players and graduate transfers who are immediately eligible.

On Friday, Mullin spoke to St. Raymond coach Jorge Lopez, expressing his desire to recruit Lopez’s two talented sophomores, Sidney Wilson and Isaiah Washington.

“He’s doing it the right way,” Lopez said. “He’s trying to reconnect with all the coaches. It’s smart on his part to try to get a head start in forging relationships.”

Mullin’s first call following his introductory press conference was to Christ the King coach Joe Arbitello, extending an offer to his junior guard Rawle Alkins, the city’s top prospect. Alkins immediately tweeted: “Finally got that St.Johns Offer I’ve been wanting!”

Mullin also set up a meeting next Thursday in Louisiana with four-star guard Brandon Sampson, sources said. The crown jewel of former St. John’s coach Steve Lavin’s recruiting class opened up his recruitment when the school let Lavin go. Mullin also has reached out to consensus top 10 prospect Cheick Diallo of Our Savior New American in Centereach, L.I., and the two sides are expected to meet soon.

There is mutual interest between St. John’s and high-scoring Drexel graduate transfer Damion Lee, a highly skilled forward, a source said. St. John’s has yet to receive permission to contact Tennessee transfer Tariq Owens, a 6-foot-10 forward, but his dad, Renard, a Queens native, reportedly wants to visit the program now that Mullin is in charge. St. John’s is also involved with Yankuba Sima, a talented 6-foot-10 center from Elev8 Sports Academy in Florida, a source said.

Mullin offered scholarships to Stepinac sophomore wing Jordan Tucker, St. Benedict’s Prep (Newark) sophomore point guard Nate Pierre-Louis, Roselle (N.J.) Catholic freshman big man Naz Reid; Putnam (Conn.) Science Academy sophomore guard Hamidou Diallo of Queens and Hutchinson (Kan.) Community College JUCO guard Bashir Ahmed of The Bronx.

Mullin and Abdelmassih also have spoken to a number of AAU coaches, including ones from New Heights, Sports U, the Rens and New York Lightning.

“As a new coach to the college game, this is the type of aggressive recruiting that is needed to have success,” Scout.com national recruiting analyst Evan Daniels said. “That’s the approach he has to have.”

The plan is to land five new players in the spring, sources said, and combine that with holdovers such as Chris Obekpa, Rysheed Jordan and Lavin’s recruits, granted they keep their commitments and Jordan and Obekpa return.

Mullin isn’t just making scholarship offers. He also is starting to build relationships with these schools and AAU programs, Roselle Catholic coach Dave Boff said. Mullin extended his coaching staff an open invitation to visit St. John’s and plans to be a fixture at any events they run.

“It’s definitely obvious to me that Chris and Matt have made it a priority to quickly develop relationships with the top programs in New York and New Jersey,” Roselle Catholic coach Dave Boff said. “That certainly seems like a smart recruiting plan.”

Rutgers landed a commitment from three-star forward Jonathan Laurent of Florida on Thursday. The 6-foot-6 wing also had scholarship offers from Alabama, Georgia Tech, Central Florida and Georgia. The school also announced junior guard Kerwin Okoro will transfer.