A chemistry PhD student who was allegedly caught injecting opioids through the door of an upstairs neighbor with whom he quarreled over noise will escape charges in the US, as he's been deported to his native China. Xuming Li, 36, faced felony charges of battery and possession of a controlled substance after he was caught on camera using a syringe to inject a clear liquid into the apartment of Umar Abdullah, his wife, and their infant daughter, all of whom fell ill. A hazardous materials team determined the substance was a mixture of the opioids methadone and hydrocodone, a complaint reads, per Fox News.