Shenai said around 2:30 p.m. yesterday he “was in the shower and didn’t hear anyone come in.” He said the lock on the front door to his suite hasn’t functioned properly since the fall.

“I just never thought it was a big deal,” he said.

Shenai said he didn’t know he had been robbed until 4 p.m. yesterday, when he received a call from HUPD saying his credit card had been found.

“At the end of the day, the credit card he got was expired,” Shenai said. “And he didn’t take anything else .”

“I wouldn’t have even known about this unless J. K. chased the guy out into the street,” Shenai said. “What J.K. did was pretty cool.”

Costello said that the chase was “surprisingly anticlimactic.” He said he felt “no adrenaline rush” as he pursued the suspect.

But he said he did appreciate the compliments he received from officers when he went into the HUPD station after the incident.

Costello sent an e-mail to the Mather Open list yesterday afternoon, saying he was concerned that the suspect was able to enter Mather Tower.

“Someody definitely let him in,” Costello said. “And that’s kind of scary. So I tried to draw people’s attention to that.”

Costello said he hoped other Mather House residents would be vigilant in fighting theft.

“I would hope someone else would do the same thing,” he said.

The Crimson failed to reach HUPD for comment last night.

—Staff writer Daniel J. Hemel can be reached at hemel@fas.harvard.edu