Near the village of Rabe, Lesko district, according to Ukrainian documents:
„The tragedy that happened between Rabe and Kołaczyce in the forests of Chryszczata on January 21, 1947, forces me to write this relay for you and to introduce [you] to a swarm of many other matters that seem distant, and yet [are] important causes of the current event, which shocked the employees of the organizational network, troops and the civilian population to the heart.
1. I am sharing with you a very sad news: on January 22, 1947, in the abovementioned place, the sanitary station of the g.[lorious] m.[emory] c.[omrade] Arpad was broken into. 16 people died there: wounded Hutsul, district leador of Security Service SB of the 5th region, Arpad, MA Orest, Rat, Dora, nurses Pcziłka, Kałyna, a sick shooter Smetana, Mirnyk f.[ormer] c.[ommander] of BSB Security Service of 4th Region, sick shooters Zaricznyj, Snih, three wounded shooters from the units, two shooters from the sanitary service Driżba and one more unknown, and the seventeenth shooter Peń, having left his hideout for water, fell into the hands of the Polish Army.
There are many reasons for this tragedy, but the direct one was that two shooters from Sirka kushch [unit covering a few villages, GTKRK] (4th region) Żurawel and Sumnyj fell into the hands of the Polish Armed Forces in the village of Maniowa on January 20, 1947 at 23:00 h. One of them, Żurawel, revealed the location of the sanitary station, which the Polish Army attacked on January 22, 47 at 8 a.m. in the morning. The rifleman Dunaj, who was together with the above–mentioned ones in the village of Maniowa during the attack, escaped and arrived on January 21, 47 at 11 am. in the morning to Prowidnyk Czornota's shelter (this is what I initially learned).
The Polish Army did not go to the sanitary station until January 22, 47 at 8 a.m., (the second intelligence info says that the sanitary station was not discovered till January 23, 1947). The enemy joined forces: there were about 600 soldiers from Lesko, Baligród and Cisna. When the Polish Army circled the sanitary station, a shooter Peń (from the station staff) came out to fetch water and was captured alive. The Polish Army wrote a note to those present at the station, summoning them to surrender, and sent Peń with it. As soon as Peń showed up at the entrance to the hideout, shots rained down and wounded Peń's hand. As the Polish Army reported to the people in Cisna, they were surprised and defended themselves until the evening, and then the Polish Army mined [blew up] the hideout with mines or grenades.
The Polish Army had 7 wounded, whether they were killed, it is not known yet. The soldiers from the Polish Armed Forces said that from the hideout you could hear female voices, and «one of them, Dora, wanted to surrender, but someone for your security forces shot her».
Slava Ukraine! Stopover, February 6, 1947”.

source: „Relay of the commander of the military «Lemko» Tactical Section of the UPA by Vasyl Martyna Mizerny «Rena» to «Prowidnyk»”, 6 February 1947; in: Institute of National Remembrance IPN, in: Acta IPN Rz 072/2, vol. 18, sh. 87—95, in: orig. Ukrainian

source: „The crimes of SB OUN in OUN documents”; in: Association for the Commemoration of the Victims of the Crimes of Ukrainian Nationalists in Wrocław — web page: suozun.org [accessible: 2022.03.02]

source: Żurek Stanisław, „Calendar of the genocide – year 1947”; in: portal: Volhynia — web page: wolyn.org [accessible: 2022.03.02]