Transit Police report arresting a Jamaica Plain man on charges he took out a knife on the Orange Line and threatened another rider with it around 3:40 p.m. on Saturday near Tufts Medical Center.

Demond Perry, 44, was arrested yesterday at the Chinatown station on a charge of assault with a dangerous weapon, police say.

Innocent, etc.

WBUR reports the students jumped into action after Tufts Medical Center got a donation of 6,000 N95 masks that had easily snappable elastic straps. But first they had to find miles of elastic cord with which to replace the bad straps.

Over the weekend, BPS custodians and Tufts Medical Center staffers converted the Quincy Elementary School cafeteria, just down Washington Sstreet from the hospital, into a clinic for screening people with Covid-19 symptoms. Read more.

WFXT reports that nine medical staffers at Brigham and Women's Hospital have tested positive for Covid-19 and that six healthcare workers at Tufts Medical Center tested positive.

WBZ reports Brigham and Women's and Mass. General have begun testing remdesivir as a possible treatment.

Where are those new trains again? People fled an Orange Line train at Tufts Medical Center around 10:30 a.m. after the station filled with smoke, as Mark Smith shows us. WBZ Newsradio reports the smoke came from a malfunctioning motor on the tired old train.

The Metro Boston EMS Council reports Tufts Medical Center is not accepting ambulances "due to flooding internally impacting multiple departments."

A parking lot off Tremont Street next to Tufts Medical Center in Chinatown would be turned into a 29-story residential and hotel tower - with all the residential units marketed as affordable - under a proposal submitted to the BPDA by two well known developers, the Asian Community Development Corp. and Tufts. Read more.

An Orange Line train wheezed its last at Tufts and now there are "severe" delays on the line, which was already having problems due to track issues near Wellington. Jennifer M. reports:

I have been trapped for 50 minutes between Back Bay and Tufts without heat.

Andrea Howlett adds: Read more.

WCVB gets the statement from State Police about an incident at the Logan Hilton early this morning at which Tufts Medical Center claims locked-out nurses and supporters threw coffee at a bus taking replacement nurses to the hospital: State Police say nothing was thrown and the protesters quickly and willingly dispersed when troopers told them to because they didn't have a permit.