SB 10.57.2

bhīṣmaṁ kṛpaṁ sa viduraṁ
 gāndhārīṁ droṇam eva ca
tulya-duḥkhau ca saṅgamya
 hā kaṣṭam iti hocatuḥ
bhīṣmam — Bhīṣma; kṛpam — Ācārya Kṛpa; sa-viduram — and also Vidura; gāndhārīm — Gāndhārī, the wife of Dhṛtarāṣṭra; droṇam — Ācārya Droṇa; eva ca — as well; tulya — equally; duḥkhau — sorrowful; ca — and; saṅgamya — meeting with; — alas; kaṣṭam — how painful; iti — thus; ha ūcatuḥ — They spoke.
The two Lords met with Bhīṣma, Kṛpa, Vidura, Gāndhārī and Droṇa. Showing sorrow equal to theirs, They cried out, “Alas, how painful this is!”

Śrīla Śrīdhara Svāmī points out that those who were involved in the assassination attempt were of course not at all sorry to hear of the Pāṇḍavas’ death. The persons specifically mentioned here, however — Bhīṣma, Kṛpa, Vidura, Gāndhārī and Droṇa — were actually unhappy to hear of the supposed tragedy.