6:59 p.m.—An HUPD officer conducted a field interview of a group in the alleyway of the Loeb Drama Center. Shawn Wiegand, 27, of Revere, who had two outstanding warrants, was arrested and taken into custody.

Oct. 26

8:54 a.m.—HUPD officers were sent to Winthrop House to investigate an unknown white powder inside the courtyard between the House’s D and G entryways. The CFD Hazardous Materials Team also responded. A sample of the substance was impounded and the area decontaminated.

Oct. 27

11:28 a.m.—HUPD officers were dispatched to Hamilton Hall to investigate a report that an individual who had previously been issued a trespass warning had returned to the property. The officers arrested Jude R. Rema, 40, of Dorchester, for trespassing.was impounded and the area decontaminated.

—Staff writer Alex B. Ginsberg can be reached ginsberg@fas.harvard.edu.