1.3 mm continuum emission toward DR21 in color-scale and white contours (at 5, 10, 15, and 20 times the rms noise level of 0.06 mJy beam⁻¹). The synthesized beam in the bottom right corner is 0″.74 × 0″.29 (PA= 1.6°). The new millimeter compact continuum sources reported here are labeled MM1-MM5, and the cometary sources follow the notation used in Harris (1973). The central squared region is zoomed in in the top right inset, which includes the position of the possible explosion center, which is marked with a yellow square (see Section 3.3).