The international community has expressed concern over 'tensions in relations' between the ruling and opposition parties in recent days.
In a statement on behalf of international community, Jimmy Mcgoldric, UN resident coordinator in Nepal, has called upon political parties to continue with their talks.
"We call upon them (political parties) to provide forward-looking leadership in the larger national interest and to continue constitutional negotiations in a spirit of flexibility and urgency," reads the statement.
The statement comes just a day after the UCPN (M)-led alliance of 30 opposition parties imposed a nationwide general strike and disrupted the Constituent Assembly (CA) meeting by continuously shouting slogans for more than one hour.
Earlier, opposition lawmakers had smashed chairs, thrown microphones and left at least three marshals injured in a CA meeting that started only past Monday midnight.
After vandalism in the CA and nationwide general strike, leaders of the ruling NC and the CPN (UML) have said that they will not hold talks with the opposition.
While condemning violence or threats of violence, the international community has also urged the two sides to return to the negotiation table.
The international community has also asked the parties to redouble their efforts to secure an inclusive constitution so that it will be 'implemented peacefully' and will get 'the widest support from the Nepali people'.
India has also expressed its concern over Nepal's political impasse. Syed Akbaruddin, spokesperson for India's external affairs ministry, told a briefing in New Delhi on Tuesday: "It is our expectation that all Nepalese leaders will work together in the final stage of the peace process, in drawing up a constitution that honours past agreements and understandings as well as the mandate of the Constituent Assembly elections."
Just a day before the January 22 deadline, political parties are still struggling to hammer out their differences over basis and number of new federal units. They say they are close to agreement on other three contentious issues of the new constitution – model of judiciary, electoral system and form of governance.
At a press meet on Wednesday, UCPN (M) Chair Pushpa Kamal Dahal and Vice Chair Baburam Bhattarai admitted to their lapses during Monday midnight's brawl in the CA and Tuesday's general strike.
UCPN (M) Chair Dahal also said that it was Prime Minister Sushil Koirala who stood against their previous understanding on the disputed issues.